The specific electrical panel clearance requirements will depend on what area you are looking at, and how much voltage there is going through the panel. Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts shall have a single means for disconnecting all ungrounded main power supply conductors for each unit. Employers may only use portable distribution and termination boxes that meet the following requirements: Occupational Safety & Health Administration. Where there is more than one driving machine in a machine room, the disconnecting means shall be numbered to correspond to the identifying number of the driving machine that they control. Hoses shall be of a nonconductive material. Electrical Safety Orders. Resistance welders. Your question has been restated below for clarity. The disconnecting means shall be an enclosed externally operable fused motor circuit switch or circuit breaker capable of being locked in the open position. Induction heating coils shall be protected by insulation or refractory materials or both. Lightning protection. Auxiliary electric equipment, such as motors, transducers, sensors, control devices, and alarms, mounted on an electrolytic cell or other energized surface shall be connected to the premises wiring systems by any of the following means: Multiconductor hard usage or extra hard usage flexible cord; Wire or cable in suitable nonmetallic raceways or cable trays; or. Electrically driven or controlled irrigation machines -. This paragraph applies to induction and dielectric heating equipment and accessories for industrial and scientific applications, but not for medical or dental applications or for appliances. Equipment installed underwater shall be identified for the purpose. Wire connectors or splicing means installed on conductors for direct burial shall be listed for such use. Each service, feeder, and branch circuit, at its disconnecting means or overcurrent device, shall be legibly marked to indicate its purpose, unless located and arranged so the purpose is evident. Electrical equipment which depends upon the natural circulation of air and convection principles for cooling of exposed surfaces shall be installed so that room air flow over such surfaces is not prevented by walls or by adjacent installed equipment. Inside tents and concessions. The Ontario Electrical Safety Code ( OESC) deals in detail with permanent and temporary theatrical electrical installations. The supply circuit switch may be used as the welder disconnecting means where the circuit supplies only one welder. Portable distribution and termination boxes. Electric equipment may not be used unless the following markings have been placed on the equipment: The manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product may be identified; and. OSHA requirements are set by statute, standards and regulations. The width of Panel or 0.762 Meter which is Greater. Panels with 151 to 600 volts should have 42 of clearance around it. In addition, from time to time we update our guidance in response to new information. Identification of manufacturer and ratings. To keep apprised of such developments, you can consult OSHA's website at http://www.osha.gov. 1910.303 (g) (1) (vi) (B) For installations built on or after August 13, 2007, 1.98 m (6.5 ft), except that where the electrical equipment exceeds 1.98 m (6.5 ft) in height, the minimum headroom may not be less than the height of the equipment. A single means to control both the electronic equipment and HVAC system is permitted. Disconnecting means. Electrolytic cells, cell line conductors, cell line attachments, and the wiring of auxiliary equipment and devices within the cell line working zone need not comply with the provisions of 1910.303 or 1910.304(b) and (c). The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. Electric equipment shall be firmly secured to the surface on which it is mounted. To keep apprised of such developments, you can consult OSHA's website at http://www.osha.gov. The disconnecting means may be omitted where a monorail hoist or hand-propelled crane bridge installation meets all of the following conditions: The unit is controlled from the ground or floor level; The unit is within view of the power supply disconnecting means; and. D-TPMS, Service required and DTC's DTC Diagnostic Trouble Codes with D-TPMS can be identified by one of the following VDN codes:. On a regular basis, they should go out and inspect the areas around them to make sure nothing has been placed where it should not go. Warning labels or signs that read DANGER - HIGH VOLTAGE - KEEP OUT shall be attached to the equipment and shall be plainly visible where persons might contact energized parts when doors are opened or closed or when panels are removed from compartments containing over 250 volts ac or dc. High-Voltage Electrical Safety Orders (Sections 2700 - 2989) In general, any electrical panel that has 0 to 150 volts going through it needs to have at least 36 of clearance around it. A switch or circuit breaker shall be provided by which each resistance welder and its control equipment can be disconnected from the supply circuit. Condition C - Exposed live parts on both sides of the work space (not guarded as provided in Condition A) with the operator between. Protection shall be provided where necessary to avoid damage from condensation leaks and breaks in such foreign systems. This fault shall be assumed to be either between two or more of the circuit conductors, or between any circuit conductor and the grounding conductor or enclosing metal raceway. Clear Height in front of Panel <480V. Would deenergizing the 110 volt control circuit as described in the scenario above be considered infeasible as delineated in the aforementioned standard? The portion of an overhead crane or hoist that contacts an energized electrolytic cell or energized attachments shall be insulated from ground. 5 Steps Before Working Lines or Equipment as De-Energized. This paragraph applies to the installation of electric equipment and wiring used in connection with cranes, monorail hoists, hoists, and all runways. Dedicated space: The space equal to the width and depth of electrical equipment in addition to the space extending from the floor to 6 feet . Limit switch. It designs clearance requirements that make sure employees have enough space around workplace equipment and in work and walking spaces. Electrical installations that are open to unqualified persons shall be made with metal-enclosed equipment or shall be enclosed in a vault or in an area, access to which is controlled by a lock. If more than one dc cell line process power supply serves the same cell line, a disconnecting means shall be provided on the cell line circuit side of each power supply to disconnect it from the cell line circuit. A disconnecting means shall be provided in the supply circuit. One last thing you can do to make sure that you are always in compliance with the relevant electrical panel clearance requirements is to perform your own internal inspections. Here's a broad breakdown of space requirements when planning around electrical panels: The dielectric breakdown level is further influenced by relative humidity, temperature, and degree of pollution in the environment. The conductors and equipment required or permitted by this subpart shall be acceptable only if approved, as defined in 1910.399. Entrances to rooms and other guarded locations containing exposed live parts shall be marked with conspicuous warning signs forbidding unqualified persons to enter. 4. No provision may be made to close this disconnecting means automatically (that is, power may only be restored by manual means). Each disconnecting means required by this subpart for motors and appliances shall be legibly marked to indicate its purpose, unless located and arranged so the purpose is evident. 2 or larger. By elevation of 2.44 m (8.0 ft) or more above the floor or other working surface. The disconnecting means shall be a switch or circuit breaker, and its rating may not be less than that necessary to accommodate overcurrent protection. This paragraph applies to equipment operating at 600 volts, nominal, or less. Grounding should be the last of these steps. You must also have a 120vac 15 amp service outlet within 25ft. General. If more than one piece of equipment is operated from the same high-voltage circuit, each piece or each group of equipment as a unit shall be provided with a high-voltage switch or equivalent disconnecting means. Safety of equipment shall be determined on the basis of the following considerations: Suitability for installation and use in conformity with the provisions of this subpart. Therapeutic pools in health care facilities are exempt from these provisions. The disconnecting means shall be within sight of the sign or outline lighting system that it controls. 3Working space is not required in back of equipment such as dead-front switchboards or control assemblies that has no renewable or adjustable parts (such as fuses or switches) on the back and where all connections are accessible from locations other than the back. All electric equipment, including power supply cords, operating at more than 15 volts and used with fountains shall be protected by ground-fault circuit interrupters. Filter by. (10 cm) for every 10 kV over that voltage. Terminals for more than one conductor and terminals used to connect aluminum shall be so identified. The workspace shall be adequate to permit at least a 90-degree opening of doors or hinged panels. There shall be no damaged parts that may adversely affect safe operation or mechanical strength of the equipment, such as parts that are broken, bent, cut, or deteriorated by corrosion, chemical action, or overheating. 600 Volts, nominal, or less. Equipment intended to interrupt current at fault levels shall have an interrupting rating sufficient for the nominal circuit voltage and the current that is available at the line terminals of the equipment. Electric equipment shall be firmly secured to the surface on which it is mounted. Receptacles on circuits supplied by an isolating transformer with an ungrounded secondary: May not be used in any other location in the facility. Fixed electric equipment may be bonded to the energized conductive surfaces of the cell line, its attachments, or auxiliaries. 3. other equipment foreign to the electrical installation shall be located in . For serious, other-than-serious, and posting requirement violations, OSHA issues a fine amount of $14,502 per violation. Ungrounded portable electric equipment shall be distinctively marked and shall employ plugs and receptacles of a configuration that prevents connection of this equipment to grounding receptacles and that prevents inadvertent interchange of ungrounded and grounded portable electric equipment. Please accept our apology for the delay in responding. In all cases, the working space shall permit at least a 90-degree opening of equipment doors or hinged panels; and. This receptacle shall be located not more than 1.98 m (6.5 ft) above the floor, platform, or grade level serving the pool. This page provides information that may aid in controlling electrical hazards in the workplace. Circuits supplying power to ungrounded receptacles for hand-held, cord- and plug-connected equipment shall meet the following requirements: The circuits shall be electrically isolated from any distribution system supplying areas other than the cell line working zone and shall be ungrounded; The circuits shall be supplied through isolating transformers with primaries operating at not more than 600 volts between conductors and protected with proper overcurrent protection; The secondary voltage of the isolating transformers may not exceed 300 volts between conductors; and. Having the same general requirements makes it much easier for facilities of all types to follow. At least one entrance of sufficient area shall be provided to give access to the working space about electric equipment. A ground-fault circuit interrupter shall be installed in the branch circuit supplying underwater fixtures operating at more than 15 volts. There should be at least three to three-and-a-half feet of clearance in front of all electrical disconnects and breaker panels. The initial electrical inspection for a . Headroom. above the ground; Busbars shall have an ampere rating not less than the overcurrent device supplying the feeder supplying the box. This area shall extend from the top of the electric equipment to the structural ceiling; Sprinkler protection is permitted for the dedicated space where the piping complies with this section; and. Disconnecting Means. Interconnection between multicar controllers. In addition, from time to time we update our guidance in response to new information. Note that our enforcement guidance may be affected by changes to OSHA rules. Control panels. Preventing Obstructions Around Electrical Panels, NEC 110.26 specifies is that all electrical panels, the NFPA 70e electrical panel clearance requirements, Floor Marking for Electrical Panel Compliance, Occupational Safety and Health Administration (OSHA). No marks or blemishes on wheel faces. Others will place the square around the area and then use diagonal stripes of floor markings to fill out the area, which makes it even more clear that nothing should be put in that place. What is the residential electrical panel clearance requirements? If we can be of further assistance, please contact the Office of General Industry [at (202) 693-1850]. Most people think only about the area directly in front of the electrical panel. Exposed conductive surfaces, such as electric equipment housings, cabinets, boxes, motors, raceways and the like that are within the cell line working zone. Occupational Safety & Health Administration. Control power is off on a large number of machines. Electrical panels are an essential component in any facility. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. Remote crane or hoist controls that may introduce hazardous electrical conditions into the cell line working zone shall employ one or more of the following systems: Pendant pushbutton with nonconductive supporting means and with nonconductive surfaces or ungrounded exposed conductive surfaces; or. A readily accessible disconnecting means shall be provided by which each heating equipment can be isolated from its supply circuit. Specific purpose equipment and installations. If switches, cutouts, or other equipment operating at 600 volts, nominal, or less, are installed in a room or enclosure where there are exposed live parts or exposed wiring operating at over 600 volts, nominal, the high-voltage equipment shall be effectively separated from the space occupied by the low-voltage equipment by a suitable partition, fence, or screen. Connection of conductors to terminal parts shall ensure a good connection without damaging the conductors and shall be made by means of pressure connectors (including set-screw type), solder lugs, or splices to flexible leads. Where rear access is required to work on deenergized parts on the back of enclosed equipment, a minimum working space of 762 mm (30 in.) Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts. No architectural appurtenance or other equipment may be located in the working space required by paragraph (g)(1)(i) of this section. The main disconnecting means for a center pivot irrigation machine shall be located at the point of connection of electrical power to the machine or shall be visible and not more than 15.2 m (50 ft) from the machine. It states: For one- and two-family dwelling units, all service conductors shall terminate in disconnecting means having a short-circuit current rating equal to or greater than the available fault current, installed in a readily accessible outdoor location. Where bare energized parts at any voltage or insulated energized parts above 600 volts, nominal, to ground are located adjacent to such entrance, they shall be suitably guarded. Any openings in such partitions or screens shall be so sized and located that persons are not likely to come into accidental contact with the live parts or to bring conducting objects into contact with them. The supply circuit disconnecting means is permitted as a heating equipment disconnecting means where the circuit supplies only one piece of equipment. Minimum clear distances may be 0.7 m (2.5 ft) for installations built before April 16, 1981. 508 Carpenter Road This set of code identifies how much clearance is needed around any type of electrical panel based on a number of different factors. Application for variances under Paragraph 1910.11 must include a statement showing how the conditions, practices, means, methods, operations, or processes used or proposed to be used would provide employment and places of employment to employees which are as safe and healthful as those required under the standard from which a variance is sought. Access. If an irrigation machine has a stationary point, a grounding electrode system shall be connected to the machine at the stationary point for lightning protection. Conductors shall be spliced or joined with splicing devices designed for the use or by brazing, welding, or soldering with a fusible metal or alloy. Removable links or removable conductors may be used as the disconnecting means. The working width around the panel must be at least 30 inches. AOP Forum Rules: Rules For Equipment Owners. July 26, 2004 What About NFPA 70e Electrical Panel Clearance? Metal-enclosed switchgear, unit substations, transformers, pull boxes, connection boxes, and other similar associated equipment shall be marked with appropriate caution signs. Electric equipment provided with ventilating openings shall be installed so that walls or other obstructions do not prevent the free circulation of air through the equipment. This paragraph applies to electric equipment operating at 600 volts, nominal, or less to ground. The minimum headroom of working spaces about service equipment, switchboards, panelboards, or motor control centers shall be 6 feet 3 inches (1.91 m). Since electrical fires are one of the biggest risks that a facility can face, it should come as no surprise to find that the NFPA has requirements in this area. Even if they know how much room in inches is required, they may not be able to properly estimate how much room they are leaving when placing items in the area. By location in a room, vault, or similar enclosure that is accessible only to qualified persons; By suitable permanent, substantial partitions or screens so arranged so that only qualified persons will have access to the space within reach of the live parts. Hoppers and transitions could plug up with product. John B. This is in response to your April 30, 1995 letter requesting interpretation of the electrical standard, 29 CFR Subpart S. Your letter, which was addressed to Mr. Joseph Pipkin, who is Director of the Office of Electrical, Electronics and Mechanical Engineering Safety Standards in the Directorate of Safety Standards Programs of the Occupational Safety and Health Administration (OSHA) was forwarded to the Directorate of Compliance Programs for response. Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage sufficient for the current that must be interrupted. [46 FR 4056, Jan. 16, 1981, as amended at 73 FR 64205, Oct. 29, 2008], Occupational Safety & Health Administration. Table S-1 - Minimum Depth of Clear Working Space at Electric Equipment, 600 V or Less. 2. Auxiliary nonelectrical connections such as air hoses, water hoses, and the like, to an electrolytic cell, its attachments, or auxiliary equipment may not have continuous conductive reinforcing wire, armor, braids, or the like. In addition, enclosed please find a copy of 29 CFR 1910.303(g) and 1910.303(h) which contain the requirements for working clearances and spaces about all electric equipment. 6. They bring all the electrical lines into one centralized location so that the main power source can feed them. The NFPA is focused largely on reducing the risk of fires from occurring so that everyone can remain safe. Closely following the new requirements in the 2002 NEC for motor disconnect locations will help make safety a reality. Visit the Electric Power Generation, Transmission and Distribution Standard Page Having an electrical panel clearance policy in place is very important not only for practical reasons, but also in order to comply with various regulations. Installations accessible to qualified persons only. horizontally shall be provided. Lighting fixtures and lighting outlets installed in the area extending between 1.52 m (5 ft) and 3.05 m (10 ft) horizontally from the inside walls of a pool shall be protected by a ground-fault circuit interrupter unless installed 1.52 m (5 ft) above the maximum water level and rigidly attached to the structure adjacent to or enclosing the pool. Rather than move the motor control center at a cost of two million dollars, can a "safe job procedure" which is audited periodically be considered an acceptable alternative or is a variance required? Except as elsewhere required or permitted in this subpart, the minimum clear working space in the direction of access to live parts of electric equipment may not be less than specified in Table S-2. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. February 7, 1996 Mr. William Overby beyond the front of the electric equipment. Single conductor cable shall be size No. Power supply circuits and receptacles for portable electric equipment. Assuming you meant "while energized": Even in countries that do not have strict regulations when it comes to electrical panel clearance will often voluntarily choose to follow the recommendations found in NFPA 70e. Since the top of the panelboard is more than 6 1 / 2 feet above the floor, the minimum working space height required for this panelboard is the height of the panelboard. On elevators without generator field control, the disconnecting means shall be located within sight of the motor controller. Reply: An employer who has in his or her workplace contractors or equipment, including a motor control center which are in violation of any of the requirements under paragraphs 1910.303 through 1910.308 are subject to citation based solely on applicable electrical installation requirements. This could be literally hundreds of machines. If equipment is exposed to physical damage from vehicular traffic, guards shall be provided to prevent such damage. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. Voltage testing should follow lock out/tag out. The overcurrent protective devices, the total impedance, the component short-circuit current ratings, and other characteristics of the circuit to be protected shall be selected and coordinated to permit the circuit protective devices used to clear a fault to do so without the occurrence of extensive damage to the electrical components of the circuit. The following hazards are the most frequent causes of electrical injuries: contact with power lines, lack of ground-fault protection, path to ground missing or discontinuous, equipment not used in manner prescribed, and improper use of extension and flexible cords. Examination, installation, and use of equipment -. Disconnecting means. Includes references that provide information related to electrical in construction including OSHA's electrical construction regulations, hazard recogition, possible solutions and additional resources. Signs or outline lighting systems operated by electronic or electromechanical controllers located external to the sign or outline lighting system may have a disconnecting means located within sight of the controller or in the same enclosure with the controller. Electricity has long been recognized as a serious workplace hazard. This would permit the motor disconnect to be located above 6'7" Chris Dennis Alwon Moderator Staff member Location Chapel Hill, NC Occupation Retired Electrical Contractor The points of control shall be located so that persons are prevented from contacting any live part or moving part of the equipment while turning on the lights. Sufficient access and working space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment. 8. Where energized parts are exposed, the minimum clear workspace shall not be less than 6 feet 6 inches (1.98 m) high (measured vertically from the floor or platform), or less than 3 feet (914 mm) wide (measured parallel to the equipment). 7. A disconnecting means shall be provided for each motor and controller. The Occupational Safety and Health Administration is a part of the U.S. Department of Labor that makes workplace clearance requirements to help ensure the safety and health of employees. Reply: 29 CFR 1910.303(g)(2)(ii) and 1910.303(h)(2)(ii) address the protection of electric equipment that may be exposed to physical damage. A limit switch or other device shall be provided to prevent the load block from passing the safe upper limit of travel of any hoisting mechanism. However, a lighting fixture or lighting outlet that was installed before April 16, 1981, may be located less than 1.52 m (5 ft) measured horizontally from the inside walls of a pool if it is at least 1.52 m (5 ft) above the surface of the maximum water level and is rigidly attached to the existing structure. Front working space. If remote controls are used for applying power, a selector switch shall be provided and interlocked to provide power from only one control point at a time. Metal frames and metal parts of rides, concessions, trailers, trucks, or other equipment that contain or support electrical equipment. Clearance To ensure that an electrical panel can be accessed at all times - during inspection, maintenance or emergency - OSHA has determined that the working space in front of the equipment must be at least 30-inches wide (or the width of the equipment). The marking shall be of sufficient durability to withstand the environment involved. The depth shall be as required in Table K-2. Of course, it is also important to try to determine who placed the item there so that they can be provided with the relevant training to ensure it does not happen again. 110-26 of the National Electrical Code (NEC): 1) at least a 3-ft clearance in front of all electrical equipment; 2) a 30 in.-wide working space in front of equipment operating at 600V or less; and 3) minimum headroom clearance of 6 ft or the height of the . Low-Voltage Electrical Safety Orders (Sections 2299 - 2599) Group 2. Driving machines, motor-generator sets, or motion and operation controllers not within sight of the disconnecting means shall be provided with a manually operated switch installed in the control circuit to prevent starting. The following equipment connected to the same source shall be bonded: Metal enclosures of electrical equipment; and. Outdoor electrical installations having exposed live parts shall be accessible to qualified persons only. Carnivals, circuses, fairs, and similar events. OSHA Electrical Panel Clearance Requirements. Open disconnecting devices before tagging. Marking. The safety-related work practices under paragraphs 1910.331 through 1910.335 are predicated on compliance with the aforementioned electrical installation requirements. Control. Per the NEC, 30" wide by 36" front to back by 6.5' vertical clearance. Mechanical strength and durability, including, for parts designed to enclose and protect other equipment, the adequacy of the protection thus provided. According to the OSHA Standard 29 CFR 1910.303 (g), companies are required to provide 3 feet of clearance around electrical services and breaker panels with between 120 and 250 volts. The dimension of the working space in the direction of access to live parts that may require examination, adjustment, servicing, or maintenance while alive shall be a minimum of 762 mm (2.5 ft). Receptacles and their mating plugs for ungrounded equipment may not have provision for a grounding conductor and shall be of a configuration that prevents their use for equipment required to be grounded. Mr. John C. (Jack) Schuldt, Sr. Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Electric Power Generation, Transmission and Distribution Standard Page, Severe Storm and Flood Recovery Assistance. Panel & lt ; 480V 2.5 ft ) or more above the ground ; shall... Space around workplace equipment and in work and walking spaces of clear working space at electric.! Acceptable only if approved, as defined in 1910.399 to avoid damage from osha electrical disconnect clearance requirements! Connectors or splicing means installed on conductors for direct burial shall be provided in the standard! Links or removable conductors may be bonded: metal enclosures of electrical equipment aid in controlling electrical hazards the! Three to three-and-a-half feet of clearance in front of Panel or 0.762 Meter which is.... Portable electric equipment, other-than-serious, and similar events the Ontario electrical Safety Orders ( Sections -. Within 25ft, or less supplies only one piece of equipment for portable electric equipment may be used as disconnecting! As De-Energized area directly in front of all types to follow of general Industry [ at ( 202 ) ]. Boxes that meet the following equipment connected to the electrical installation requirements keep apprised of such developments, can... Necessary to avoid damage from condensation leaks and breaks in such foreign.! Use portable distribution and termination boxes that meet the following equipment connected to the working space permit. Location in the open position, OSHA issues a fine amount of $ 14,502 per violation be m! Externally operable fused motor circuit switch or circuit breaker shall be firmly to! Page provides information that may aid in controlling electrical hazards in the workplace operating at 600 volts should have of. Are predicated on compliance with the aforementioned electrical installation shall be so identified 600 V or less to.! Protection shall be accessible to qualified persons only signs forbidding unqualified persons to enter service within. Only use portable distribution and termination boxes that meet the following equipment connected to the electrical shall. And in work and walking spaces and use of equipment the adequacy of the electric equipment be... To 600 volts, nominal, or less to ground be accessible to qualified persons only for each and... And receptacles for portable electric equipment shall be as required in table K-2 to new information William Overby beyond front. Amount of $ 14,502 per violation from its supply circuit disconnecting means the. Predicated on compliance with the aforementioned standard power source can feed them each resistance welder and its control can. 2002 NEC for motor disconnect locations will help make Safety a reality to withstand the environment involved at least to... Only if approved, as defined in 1910.399 Height in front of Panel or Meter. Each motor and controller the width of Panel & lt ; 480V everyone can remain.. Circuit interrupter shall be provided by which each heating equipment can be of sufficient area shall be identified the. Parts shall be as required in table K-2 recognized as a heating equipment disconnecting means shall be insulated ground... Clearance requirements that make sure employees have enough space around workplace equipment and in work walking! Safety Orders ( Sections 2299 - 2599 ) Group 2 the area directly in front of the electrical clearance! $ 14,502 per violation circuits and receptacles for portable electric equipment, circuses, fairs, and chair! 120Vac 15 amp service outlet within 25ft, please contact the Office of Industry! In work and walking spaces rooms and other guarded locations containing exposed parts... The surface on which it is mounted power source can feed them floor or other working surface pools! For the delay in responding large number of machines connectors or splicing means installed on for! And breaks in such foreign systems, please contact the Office of general Industry at! ) deals in detail with permanent and temporary theatrical electrical installations 10 cm ) for built... Use portable distribution and termination boxes that meet the following equipment connected to surface. The safety-related work practices under paragraphs 1910.331 through 1910.335 are predicated on compliance with aforementioned! The delay in responding with 151 to 600 volts should have 42 clearance. This paragraph applies to electric equipment electric equipment operating at 600 volts, nominal, or.. Have a 120vac 15 amp service outlet within 25ft that voltage such damage ; 480V one piece of equipment aluminum. Focused largely on reducing the risk of fires from occurring so that everyone can remain safe to... Provision may be used as the welder disconnecting means shall be identified for the purpose - Depth! The marking shall be as required in table K-2 provided for each motor controller! It is mounted over that voltage the front of the protection thus provided: enclosures! Is Greater 2299 - 2599 ) Group 2 adequacy of the electrical into! In responding carnivals, circuses, fairs, and similar events, 1996 Mr. William Overby beyond front... Or support electrical equipment ; and as the disconnecting means is permitted a. Receptacles for portable electric equipment above be considered infeasible as delineated in the.... They can not create additional employer obligations, concessions, trailers, trucks, or other equipment to. Is exposed to physical damage from condensation leaks and breaks in such foreign systems or.. The electronic equipment and in work and walking spaces the area directly in of! Single means to control both the electronic equipment and in work and walking spaces guarded locations containing exposed parts. Meet the following equipment connected to the electrical Panel easier for facilities of electrical! Be acceptable only if approved, as defined in 1910.399 Panel & lt ; 480V boxes that meet following... That our enforcement guidance may be used in any facility to withstand the environment.... Durability, including, for parts designed to enclose and protect other equipment contain... Note that our enforcement guidance may be affected by changes to OSHA rules means installed on conductors direct! Heating equipment disconnecting means where the circuit supplies only one piece of equipment doors or hinged panels Before 16!, the disconnecting means where the circuit supplies only one piece of equipment breaker capable of locked... Website at http: //www.osha.gov or hoist that contacts an energized electrolytic cell or attachments..., but they can not create additional employer obligations supplying underwater fixtures operating at than. Connected to the same general requirements makes it much easier for facilities of all types to.. 110 volt control circuit as described in the facility hazards in the aforementioned standard not less than the overcurrent supplying. In controlling electrical hazards in the open position the main power source can feed them cell line, attachments... Be identified for the purpose all the electrical installation shall be provided by each! Doors or hinged panels ; and be isolated from its supply circuit consult OSHA website. Changes to OSHA rules the protection thus provided manual means ) contact the Office of general [! Be listed for such use as defined in 1910.399 per violation space electric... As defined in 1910.399 of such developments, you can consult OSHA 's website at http: //www.osha.gov crane... Operable fused motor circuit switch may be used as the disconnecting means where the circuit only... That contacts an energized electrolytic cell or energized attachments shall be within sight of the protection provided... Space shall permit at least one entrance of sufficient area shall be of sufficient durability to the... A disconnecting means automatically ( that is, power may only be restored by manual means ) the box to. 26, 2004 What about NFPA 70e electrical Panel equipment, the working space shall at... Off on a large number of machines HVAC system is permitted be identified for the delay in responding a.: Occupational Safety & Health Administration or auxiliaries than the overcurrent device supplying the.... Nfpa 70e electrical Panel disconnected from the supply circuit installations built Before April 16, 1981 insulated from.! Table K-2 exempt from these provisions, from time to time we update our guidance in response to new.! 1910.335 are predicated on compliance with the aforementioned standard and receptacles for portable electric equipment may bonded... Approved, as defined in 1910.399 means is permitted as a serious workplace hazard boxes that meet the following connected! One piece of equipment terminals used to connect aluminum shall be as required in table K-2 and required. Circumstances, but they can not create additional employer obligations standards and regulations for installations built Before April 16 1981! Group 2 70e electrical Panel clearance or equipment as De-Energized from time to time update... The same source shall be listed for such use that may aid in electrical... That contain or support electrical equipment the Panel must be at least three to three-and-a-half feet clearance. The disconnecting means where the circuit supplies only one welder forbidding unqualified to..., please contact the Office of general Industry [ at ( 202 ) 693-1850 ] that! Office of general Industry [ at ( 202 ) 693-1850 ] permitted this. Least a 90-degree opening of doors or hinged panels work and walking spaces volt control circuit as described the! Requirements: Occupational Safety & Health Administration 2.5 ft ) for every 10 kV over that voltage volts. Have enough space around workplace equipment and HVAC system is permitted supply circuit have an ampere rating less! Panels ; and, the working space about electric equipment may be affected by to... Than one conductor and terminals used to connect aluminum shall be provided by which heating! The safety-related work practices under paragraphs 1910.331 through 1910.335 are predicated on compliance with the aforementioned standard removable or. Surfaces of the electric equipment, the adequacy of the electrical Lines into centralized. All cases, the working width around the Panel must be at a. Installations having exposed live parts shall be provided to prevent such damage used to aluminum! Same general requirements makes it much easier for facilities of all electrical disconnects and breaker panels everyone can remain.!
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