What reference covers safety equipment required for working with 50 volts of more

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## 29 CFR 1910 (OSHA) - (1) Voltage withstand. Insulating equipment used for the protection of employees shall be capable of withstanding, without failure, the voltages that may be imposed upon it. NOTE TO PARAGRAPH (B)(1): These voltages include transient overvoltages, such as switching surges, as well as nominal line voltage. See appendix B to §1910.269 for a discussion of transient overvoltages on electric power transmission and distribution systems. See IEEE Std 516-2009, IEEE Guide for Maintenance Methods on Energized Power Lines, for methods of determining the magnitude of transient overvoltages on an electrical system and for a discussion comparing the ability of insulation equipment to withstand a transient overvoltage based on its ability to withstand ac voltage testing. - (2) Equipment current. (i) Protective equipment used for the primary insulation of employees from energized circuit parts shall be capable of passing a current test when subjected to the highest nominal voltage on which the equipment is to be used. - (ii) When insulating equipment is tested in accordance with paragraph (b)(2)(i) of this section, the equipment current may not exceed 1 microampere per kilovolt of phase-to-phase applied voltage. NOTE 1 TO PARAGRAPH (B)(2): This paragraph applies to equipment that provides primary insulation of employees from energized parts. It does not apply to equipment used for secondary insulation or equipment used for brush contact only. NOTE 2 TO PARAGRAPH (B)(2): For ac excitation, this current consists of three components: Capacitive current because of the dielectric properties of the insulating material itself; conduction current through the volume of the insulating equipment; and leakage current along the surface of the tool or equipment. The conduction current is normally negligible. For clean, dry insulating equipment, the leakage current is small, and the capacitive current predominates. NOTE TO PARAGRAPH (B): Plastic guard equipment is de…

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ ## WAC 296-24-975 Selection and use of work practices. - (1) General . You must employ safety-related work practices to prevent electric shock or other injuries resulting from either direct or indirect electrical contacts, when work is performed near or on equipment or circuits which are or may be energized. The specific safety-related work practices must be consistent with the nature and extent of the associated electrical hazards. - (a) Deenergized parts . You must deenergize live parts to which an employee may be exposed shall be deenergized before the employee works on or near them, unless the employer can demonstrate that deenergizing introduces additional or increased hazards or is infeasible due to equipment design or operational limitations. Live parts that operate at less than 50 volts to ground need not be deenergized if there will be no increased exposure to electrical burns or to explosion due to electric arcs. - Note 1: Examples of increased or additional hazards include interruption of life support equipment, deactivation of emergency alarm systems, shutdown of hazardous location ventilation equipment, or removal of illumination for an area. - Note 2: Examples of work that may be performed on or near energized circuit parts because of infeasibility due to equipment design or operational limitations include testing of electric circuits that can only be performed with the circuit energized and work on circuits that form an integral part of a continuous industrial process in a chemical plant that would otherwise need to be completely shut down in order to permit work on one circuit or piece of equipment - Note 3: Work on or near deenergized parts is covered by subsection (2) of this section. - (b) Energized parts . If the exposed live parts…

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Division 2 AO 2-2017 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (A) Arc-rated protection is not necessary for the employee's hands when the employee is wearing rubber insulating gloves with protectors or, if the estimated incident energy is no more than 14 cal/cm2, heavy-duty leather work gloves with a weight of at least 407 gm/m2 (12 oz/yd2), - (B) Arc-rated protection is not necessary for the employee's feet when the employee is wearing heavy-duty work shoes or boots, - (C) Arc-rated protection is not necessary for the employee's head when the employee is wearing head protection meeting [redacted phone](9) and 437003-0134(9) if the estimated incident energy is less than 9 cal/cm2 for exposures involving single-phase arcs in open air or 5 cal/cm2 for other exposures, - (D) The protection for the employee's head may consist of head protection meeting [redacted phone](9) and [redacted phone](9), and a faceshield with a minimum arc rating of 8 cal/cm2 if the estimated incident-energy exposure is less than 13 cal/cm2 for exposures involving single-phase arcs in open air or 9 cal/cm2 for other exposures, and - (E) For exposures involving single phase arcs in open air, the arc rating for the employee's head and face protection may be 4 cal/cm2 less than the estimated incident energy. Note to paragraph (8): See Appendix E to Division 2/RR for further information on the selection of appropriate protection. - (9) Fuse handling. When an employee must install or remove fuses with one or both terminals energized at more than 300 volts, or with exposed parts energized at more than 50 volts, the employer must ensure that the employee uses tools or gloves rated for the voltage. When an employee installs or removes expulsiontype fuses with one or both terminals energized at more than 300 volts, the employer must ensure that the employee wears eye protection meeting the requirements of Division 2/I and Division 3/E, uses a tool rated for the …

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Division 2 AO 2-2017 Oregon Administrative Rules Oregon Occupational Safety and Health Division - Guarded. Covered, fenced, enclosed, or otherwise protected, by means of suitable covers or casings, barrier rails or screens, mats, or platforms, designed to minimize the possibility, under normal conditions, of dangerous approach or inadvertent contact by persons or objects. Note to the definition of "guarded" : Wires that are insulated, but not otherwise protected, are not guarded. Insulated. Separated from other conducting surfaces by a dielectric (including air space) offering a high resistance to the passage of current. Note to the definition of "insulated" : When any object is said to be insulated, it is understood to be insulated for the conditions to which it normally is subjected. Otherwise, it is, for the purpose of this section, uninsulated. - Isolated. Not readily accessible to persons unless special means for access are used. - Statistical sparkover voltage. A transient overvoltage level that produces a 97.72-percent probability of sparkover (that is, two standard deviations above the voltage at which there is a 50-percent probability of sparkover). - Statistical withstand voltage. A transient overvoltage level that produces a 0.14percent probability of sparkover (that is, three standard deviations below the voltage at which there is a 50-percent probability of sparkover). - B. Installations energized at 50 to 300 volts. The hazards posed by installations energized at 50 to 300 volts are the same as those found in many other workplaces. That is not to say that there is no hazard, but the complexity of electrical protection required does not compare to that required for highvoltage systems. The employee must avoid contact with the exposed parts, and the protective equipment used (such as rubber insulating gloves) must provide insulation for the voltages involved. - C. Exposed energized parts over 300 volts AC. [redacted phone](3)(a) requires …

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Division 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (iii) If the insulating capability of protective equipment may be subject to damage during use, the insulating material shall be protected. (For example, an outer-covering of leather is sometimes used for the protection of rubber insulating material.) - (iv) Employees shall wear nonconductive head protection wherever there is a danger of head injury from electric shock or burns due to contact with exposed energized parts. - (v) Employees shall wear protective equipment for the eyes or face wherever there is danger of injury to the eyes or face from electric arcs or flashes or from flying objects resulting from electrical explosion. - (2) General protective equipment and tools. - (i) When working near exposed energized conductors or circuit parts, each employee shall use insulated tools or handling equipment if the tools or handling equipment might make contact with such conductors or parts. If the insulating capability of insulated tools or handling equipment is subject to damage, the insulating material shall be protected. - (A) Fuse handling equipment, insulated for the circuit voltage, shall be used to remove or install fuses when the fuse terminals are energized. - (B) Ropes and handlines used near exposed energized parts shall be nonconductive. - (ii) Protective shields, protective barriers, or insulating materials shall be used to protect each employee from shock, burns, or other electrically related injuries while that employee is working near exposed energized parts which might be accidentally contacted or where dangerous electric heating or arcing might occur. When normally enclosed live parts are exposed for maintenance or repair, they shall be guarded to protect unqualified persons from contact with the live parts. - (b) Alerting techniques. The following alerting techniques shall be used to warn and protect employees from hazards which could cause injury due to ele…

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (a) Practices addressed in this standard . You must train and familiarize employees with the safety-related work practices required by WAC 296-24-960 through 296-[redacted postal code] that pertain to their respective job assignments. - (b) Additional requirements for unqualified persons . You must also train and familiarize employees who are covered by subsection (1) of this section but who are not qualified persons with any electrically related safety practices not specifically addressed by WAC 296-24-960 through 296-24-985 but which are necessary for their safety. - (c) Additional requirements for qualified persons . Qualified persons (i.e., those permitted to work on or near exposed energized parts) shall, at a minimum, be trained in and familiar with the following: - (i) The skills and techniques necessary to distinguish exposed live parts from other parts of electric equipment; - (ii) The skills and techniques necessary to determine the nominal voltage of exposed live parts; and - (iii) The clearance distances specified in WAC 296-24-960 and the corresponding voltages to which the qualified person will be exposed. - Note 1: For the purposes of WAC 296-24-960 through 296-24-985 a person must have the training required by (c) of this subsection in order to be considered a qualified person. - Note 2: Qualified persons whose work on energized equipment involves either direct contact or contact by means of tools or materials must also have the training needed to meet WAC 296-24-960. - (3) Type of training . The training required by this section must be of the classroom or on-thejob type. The degree of training provided must be determined by the risk to the employee. ## Table S-4.--Typical Occupational Categories of Employees Facing a Higher than Nor…