This is necessary for all types of work including examination of the electrical panel, making adjustments to the electrical panel, servicing the electrical panel, and of course, performing maintenance on the electrical panel. It is not an official legal edition of the CFR. This paragraph applies to the installation of the electrical components and accessory equipment of electrolytic cells, electrolytic cell lines, and process power supply for the production of aluminum, cadmium, chlorine, copper, fluorine, hydrogen peroxide, magnesium, sodium, sodium chlorate, and zinc. 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. The supply circuit switch may be used as the welder disconnecting means where the circuit supplies only one welder. A fence may not be less than 2.13 m (7.0 ft) in height or a combination of 1.80 m (6.0 ft) or more of fence fabric and a 305-mm (1-ft) or more extension utilizing three or more strands of barbed wire or equivalent. 7. Wiring for an amusement ride, attraction, tent, or similar structure may not be supported by another ride or structure unless specifically identified for the purpose. Except as provided in paragraph (b)(2)(iv) of this section, a motor-circuit switch, molded case switch, or circuit breaker shall be provided in the leads from the runway contact conductors or other power supply on all cranes and monorail hoists. Signs and outline lighting systems located within fountains shall have the disconnect located at least 1.52 m (5.0 ft) from the inside walls of the fountain. 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. Arc welders. They are respected around the world and many countries follow their recommendations when creating their own rules and regulations. Warning sign for multiple disconnecting means. Amusement rides and amusement attractions shall be maintained not less than 4.57 m (15 ft) in any direction from overhead conductors operating at 600 volts or less, except for the conductors supplying the amusement ride or attraction. 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. Each sign and outline lighting system, or feeder circuit or branch circuit supplying a sign or outline lighting system, shall be controlled by an externally operable switch or circuit breaker that will open all ungrounded conductors. Hoppers and transitions could plug up with product. 2932 Hazel Ave. By elevation of 8 feet (2.44 m) or more above the floor or other working surface and so installed as to exclude unqualified persons. (10 cm) for every 10 kV over that voltage. At first glance many people would read the NEC electrical panel clearance requirements and assume that it simply means that you cannot put any additional equipment within the set amount of space. Flexible cords and cables shall be listed for extra-hard usage. Power supply circuits and receptacles for portable electric equipment. Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. Also, from time to time we update our guidance in response to new information. Permanent ladders or stairways shall be provided to give safe access to the working space around electric equipment installed on platforms, balconies, mezzanine floors, or in attic or roof rooms or spaces. Working space is not required in back of assemblies such as dead-front switchboards or motor control centers where there are 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. President, Safety Specialties Incorporated Electrical installations having exposed live parts shall be accessible to qualified persons only and shall comply with the applicable provisions of paragraph (j)(3) of this section. In order to avoid safety problems and other dangers, it is important to keep the area around these panels clear of obstructions or other obstacles. (150 mm) For equipment designed for floor mounting, clearance between top surfaces and adjacent surfaces shall be provided to dissipate rising warm air. Electrical equipment shall not be used unless the manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product may be identified is placed on the equipment and unless other markings are provided giving voltage, current, wattage, or other ratings as necessary. Additional lighting fixtures are not required where the working space is illuminated by an adjacent light source. A single means to control both the electronic equipment and HVAC system is permitted. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov. Hundreds of motors would be shutoff. Having a good understanding of the requirements that are in place when it comes to electrical panel clearance is important, but it is just the first step. Unfortunately, it is often difficult for people to remember exactly how much distance from a panel things can be. Exposed conductive surfaces, such as electric equipment housings, cabinets, boxes, motors, raceways and the like that are within the cell line working zone. Other questions you can expect from an OSHA inspector include: Examination, installation, and use of equipment -. Grounding should be the last of these steps. Except for underground box covers that weigh over 45.4 kg (100 lb), doors and covers of enclosures used solely as pull boxes, splice boxes, or junction boxes shall be locked, bolted, or screwed on. One of the most common questions people have when setting standards in a facility for electrical panel clearance requirements is what OSHA says. It is just as important to create your own set of policies and procedures to ensure that you are always in compliance with the various regulations. Identification of disconnecting means and circuits. Of course, this means having a lot of different wires and other electrical equipment located in one area. Clearance is required in the direction of access for operation, that is in the front. 0.9 Meter (3 Ft) The width of the workingspace in front of the Panel. General. 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. By partitions or screens so arranged that only qualified persons will have access to the space within reach of the live parts. Grouping. Marking. Interrupting rating. 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. Electric equipment shall be firmly secured to the surface on which it is mounted. Mr. William Overby Parts of electric equipment which in ordinary operation produce arcs, sparks, flames, or molten metal shall be enclosed or separated and isolated from all combustible material. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov. Electric equipment shall be installed in a neat and workmanlike manner. All panel controls shall be of dead-front construction. Safety electrical work practices; motor disconnects;work clearances. 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. A switch or circuit breaker shall be provided by which each resistance welder and its control equipment can be disconnected from the supply circuit. Electric equipment shall be free from recognized hazards that are likely to cause death or serious physical harm to employees. Conductors shall be spliced or joined with splicing devices identified for the use or by brazing, welding, or soldering with a fusible metal or alloy. Scenario: Workplace motor control centers have boxes with 480 volts disconnects and 110 volt control power with the same box. Entrances to rooms and other guarded locations containing exposed live parts shall be marked with conspicuous warning signs forbidding unqualified persons to enter. 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. Sincerely, 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. Operation. Approval. Minimum Clearance Around Electrical Panels (Carrying 600 Volts or Less) Insufficient clearance around electrical panels is one of the many electrical hazards that can endanger worker safety. 4. A means shall be provided to disconnect power to all electronic equipment in an information technology equipment room. One of the easiest and most effective ways to make sure that nobody places anything in the area around your electrical panels is to mark the area with floor marking tape. Miles, Jr., Director OSHA requirements are set by statute, standards and regulations. Disconnecting means. Durability of markings. February 7, 1996 This is not only important for avoiding getting fined for violating the requirements, but also for ensuring your facility is as safe as possible. 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). For equipment designed for floor mounting, clearance between top surfaces and adjacent surfaces shall be provided to dissipate rising warm air. D-TPMS, Service required and DTC's DTC Diagnostic Trouble Codes with D-TPMS can be identified by one of the following VDN codes:. Although there were no documented injuries to warrant this change, it's obvious that this requirement should enhance safety. A readily accessible disconnecting means shall be provided by which each heating equipment can be isolated from its supply circuit. Identified Replacement Component Required.. In order for the 480 volt circuit(s) to be considered deenergized, the lockout and tagging requirements of paragraph 1910.333(b)(2) must be met. The points of control shall be so located that persons are not likely to come in contact with any live part or moving part of the equipment while turning on the lights. The ampere rating of this disconnecting means may not be less than the supply conductor ampacity. 1910.305 (b): Wiring requirements for cabinets, boxes, and fittings. Motor controllers. 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? Visit the Electric Power Generation, Transmission and Distribution Standard Page What is the residential electrical panel clearance requirements? No architectural appurtenance or other equipment may be located in the working space required by paragraph (g)(1)(i) of this section. Enclosure for electrical installations. Headroom. It shall also be protected by a ground-fault circuit interrupter installed in the branch circuit supplying the fixture. However, other equipment associated with the electrical installation and located above or below the electric equipment may extend not more than 153 mm (6 in.) OSHA's electrical standards are designed to protect employees exposed to dangers such as electric shock, electrocution, fires, and explosions. This paragraph applies to X-ray equipment. If fixed electric equipment is mounted on an energized conductive surface, it shall be bonded to that surface. The disconnecting means shall be operable from a location readily accessible from the X-ray control. 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. The width of Panel or 0.762 Meter which is Greater. The type of enclosure used in a given case shall be designed and constructed according to the hazards associated with the installation. The Ontario Electrical Safety Code ( OESC) deals in detail with permanent and temporary theatrical electrical installations. All splices and joints and the free ends of conductors shall be covered with an insulation equivalent to that of the conductors or with an insulating device identified for the purpose. Induction and dielectric heating equipment. A variety of possible solutions may be implemented to reduce or eliminate the risk of injury associated with electrical work. Working space about electric equipment. This NEC working clearance will provide not only the person working on the equipment with room, but also their tools. For installations other than equipment described in paragraph (h)(2)(v) of this section, a wall, screen, or fence shall be used to enclose an outdoor electrical installation to deter access by persons who are not qualified. The electric panel door must be able to open to a 90-degree angle. Clear spaces. These markings can include floor marking tape, floor signs, and labels. If the disconnect for a piece of HVAC equipment doesn't have any fuses, then can you make the argument the switch will not require maintenance so that 3' clearance isn't required? "Infeasibility" is considered by OSHA on a case by case, work application basis. Concrete, brick, and tile walls are considered as grounded surfaces. The depth shall be as required in Table K-2. Following the 110.26 NEC standards is fairly easy. Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling. [This document was amended on October 24, 2012 to strike information that no longer reflects current OSHA policy.] Outdoors, it must be GFCI protected. General. Application. Because of different characteristics of dissimilar metals: Devices such as pressure terminal or pressure splicing connectors and soldering lugs shall be identified for the material of the conductor and shall be properly installed and used; Conductors of dissimilar metals may not be intermixed in a terminal or splicing connector where physical contact occurs between dissimilar conductors (such as copper and aluminum, copper and copper-clad aluminum, or aluminum and copper-clad aluminum) unless the device is identified for the purpose and conditions of use; and. Workspace about equipment. Capable of accepting a lock. Where controls are enclosed in cabinets, the doors shall either open at least 90 degrees or be removable. All of these options will use effective visual communication standards to make sure that nothing is placed in the area directly around your electrical panels. The entrances to all buildings, rooms or enclosures containing exposed live parts or exposed conductors operating at over 600 volts, nominal, shall be kept locked or shall be under the observation of a qualified person at all times. Suitability of equipment for an identified purpose may be evidenced by listing, labeling, or certification for that identified purpose. Placed within view of the runway contact conductors. Busbar connectors shall be provided where conductors terminate directly on busbars; Receptacles shall have overcurrent protection installed within the box. OSHA Requirements for Electrical Panel Floor Markings 5 Steps Before Working Lines or Equipment as De-Energized. Illumination shall be provided for all working spaces about electric equipment. 6. Insulation integrity. Most facilities will already have floor marking tape on hand since it is one of the most commonly used safety items around. 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