On wheelchair lifts and stairway chair lifts, the disconnecting means shall be located within sight of the motor controller. Means shall be provided at the operating station to open the power circuit to all motors of the crane or monorail hoist where the disconnecting means is not readily accessible from the crane or monorail hoist operating station. The marking shall be of sufficient durability to withstand the environment involved. 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 safety-related work practices under paragraphs 1910.331 through 1910.335 are predicated on compliance with the aforementioned electrical installation requirements. 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. 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. When normally enclosed live parts are exposed for inspection or servicing, the working space, if in a passageway or general open space, shall be suitably guarded. The NFPA is focused largely on reducing the risk of fires from occurring so that everyone can remain safe. 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. A disconnecting means shall be provided in the supply circuit for each arc welder that is not equipped with a disconnect mounted as an integral part of the welder. 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. Driving machines 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 adjacent to the equipment in order to prevent starting. 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. The disconnecting means shall be operable from a location readily accessible from the X-ray control. Working space about electric equipment. In outdoor pool areas, lighting fixtures, lighting outlets, and ceiling-suspended (paddle) fans may not be installed over the pool or over the area extending 1.52 m (5 ft) horizontally from the inside walls of a pool unless no part of the lighting fixture of a ceiling-suspended (paddle) fan is less than 3.66 m (12 ft) above the maximum water level. Your letter has been referred to the Directorate of Enforcement Program's (DEP's) Office of General Industry Enforcement for an answer to your question regarding clearances from electrical equipment. NEC 110.26 (A) still applies even if equipment will be in an ESWC. This set of code identifies how much clearance is needed around any type of electrical panel based on a number of different factors. Enclosure, Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. When installing or updating an electrical panel, it is important to make sure that there is plenty of room around the panel for the electrician to safely work. 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. Installations accessible to qualified persons only. 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. Terms You Should Know: Working space: The front clearance, side clearance, and height clearance requirements for electrical equipment that provide a safe area for maintenance, inspections, and other work. See if you can "orient" the disconnect so as to have requisite clearance in front. Control. Ladder clearance Mr. John C. (Jack) Schuldt, Sr. July 26, 2004 With these tools, floor marking for electrical panel compliance can be accomplished without spending too much on time or effort. X-Ray equipment. It is also easy to verify. Working clearances. 4. The minimum headroom of working spaces about service equipment, switchboards, panelboards, or motor control centers shall be 6 feet 3 inches (1.91 m). The converting apparatus (including the dc line) and high-frequency electric circuits (excluding the output circuits and remote-control circuits) shall be completely contained within enclosures of noncombustible material. Occupational Safety & Health Administration. Where controls are enclosed in cabinets, the doors shall either open at least 90 degrees or be removable. (150 mm) Doors or covers giving access to uninsulated parts of indoor signs or outline lighting exceeding 600 volts and accessible to other than qualified persons shall either be provided with interlock switches to disconnect the primary circuit or shall be so fastened that the use of other than ordinary tools will be necessary to open them. 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. Where the driving machine is located in a remote machinery space, a single disconnecting means for disconnecting all ungrounded main power supply conductors shall be provided and be capable of being locked in the open position. In order to remain in compliance with the relevant regulations, you cannot put anything in the space around an electrical panel. 1Minimum depth of clear working space in front of electric equipment with a nominal voltage to ground above 25,000 volts may be the same as that for 25,000 volts under Conditions A, B, and C for installations built before April 16, 1981. One of the most common questions people have when setting standards in a facility for electrical panel clearance requirements is what OSHA says. Switchboards, panelboards, and distribution boards installed for the control of light and power circuits, and motor control centers shall be located in dedicated spaces and protected from damage. 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. Installations covered by paragraph (h) of this section shall comply with all applicable provisions of this subpart, except as follows: Disconnecting means. Line connectors are of the listed sequential-interlocking type so that load connectors are connected in the following sequence: Equipment grounding conductor connection; Grounded circuit-conductor connection, if provided; and, Ungrounded conductor connection; and so that disconnection is in the reverse order; or. Cord connectors may not be laid on the ground unless listed for wet locations. 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. We hope you find this information helpful. 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. Additional lighting fixtures are not required where the working space is illuminated by an adjacent light source. A disconnecting means shall be provided between the runway contact conductors and the power supply. The safety-related work practices under paragraphs 1910.331 through 1910.335 are predicated on compliance with the aforementioned electrical installation requirements. When looking into electrical panel clearance safety, you need to start by looking at the requirements put in place by the national electric code, or NEC. Mechanical strength and durability, including, for parts designed to enclose and protect other equipment, the adequacy of the protection thus provided; Heating effects under all conditions of use; Classification by type, size, voltage, current capacity, and specific use; and. 7. When it is necessary to perform work on energized equipment, OSHA 1910.333 (a) (2) requires safety-related work practices to be used and NFPA 70E Article 110.8 (B) (1) requires an Electrical Hazard Analysis before work is performed on live equipment operating at 50 volts and higher. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. In all cases, the working space shall permit at least a 90-degree opening of equipment doors or hinged panels; and. 2. Thank you for your interest in occupational safety and health. If anything is found in a spot that is too close to the panel, the items can be moved right away. If deenergizing the control circuit(s) is infeasible, paragraph 1910.333(c)(2) would apply to work on or near the 110 volt control circuit(s). Inside tents and concessions. In addition, from time to time we update our guidance in response to new information. For indoor installation, the dedicated space shall comply with the following: The space equal to the width and depth of the equipment and extending from the floor to a height of 1.83 m (6.0 ft) above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to the electrical installation. Electric equipment shall be firmly secured to the surface on which it is mounted. Mechanical strength and durability, including, for parts designed to enclose and protect other equipment, the adequacy of the protection thus provided. Where the driving machine or the motor-generator set is located in a remote machinery space, a single means for disconnecting all ungrounded main power supply conductors shall be provided and be capable of being locked in the open position. Operation. Cord- and plug-connected equipment. 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 designed for the purpose. 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. Note that our enforcement guidance may be affected by changes to OSHA rules. Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts. Wire connectors or splicing means installed on conductors for direct burial shall be listed for such use. For serious, other-than-serious, and posting requirement violations, OSHA issues a fine amount of $14,502 per violation. The disconnecting means shall disconnect the sign or outline lighting system and the controller from all ungrounded supply conductors. Lock out/tag out after disconnecting, before voltage testing. AC systems supplying fixed and portable electric equipment within the cell line working zone; and. Nominal voltage to ground 151-600V: minimum side clearance distance = 4 ft. (1.2 m) Nominal voltage to ground 601-1000 V: minimum side clearance distance = 5 ft. (1.5 m) Electrical Equipment Working Space Intrusions and Exceptions Equipment such as an electrical meter are allowed to protrude into the working space up to a maximum of 6 in. Suitability of equipment for an identified purpose may be evidenced by listing, labeling, or certification for that identified purpose. 2.0 Meter. Electricity has long been recognized as a serious workplace hazard. Each ride and concession shall be provided with a fused disconnect switch or circuit breaker located within sight and within 1.83 m (6 ft) of the operator's station. Some facilities will simply place the tape in a square around the panel to show the necessary distance that needs to be kept clear. OSHA standards are sets of guidelines and requirements enforced by the Occupational Safety and Health Administration (OSHA) to minimize health and safety risks in US-based workplaces. 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. 10 or smaller conductors may be connected by means of wire binding screws or studs and nuts having upturned lugs or equivalent. Directorate of Compliance Programs, Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. Group 1. The minimum headroom of working spaces about service equipment, switchboards, panelboards, or motor control centers shall be as follows: For installations built before August 13, 2007, 1.91 m (6.25 ft); and. 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