Electrical work in the rain

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (e) Circuit impedance and other characteristics . You must select and coordinate the overcurrent protective devices, the total impedance, the component short-circuit current ratings, and other characteristics of the circuit to be protected 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. You must assume this fault to be either between two or more of the circuit conductors, or between any circuit conductor and the grounding conductor or enclosing metal raceway. - (f) Deteriorating agents . Unless identified for use in the operating environment, you must not locate any conductors or equipment in damp or wet locations; where exposed to gases, fumes, vapors, liquids, or other agents that have a deteriorating effect on the conductors or equipment; or where exposed to excessive temperatures. - (g) Mechanical execution of work . You must install electric equipment in a neat and workmanlike manner. - (i) You must effectively close unused openings in boxes, raceways, auxiliary gutters, cabinets, equipment cases, or housings to afford protection substantially equivalent to the wall of the equipment. - (ii) You must rack conductors to provide ready and safe access in underground and subsurface enclosures that persons enter for installation and maintenance. - (iii) Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other surfaces, may not be damaged or contaminated by foreign materials such as paint, plaster, cleaners, abrasives, or corrosive residues. - (iv) There must 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…

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## OCCUPATIONAL HEALTH AND SAFETY, 2020 S-15.1 REG 10 ## Electrical equipment - 30-3 (1) An employer or contractor shall ensure that only approved electrical equipment is used by workers and that the electrical equipment is: - (a) approved for the intended use and location of the electrical equipment; - (b) maintained in proper working condition and capable of safe operation; and - (c) tested in accordance with the manufacturer's recommendations. - (2) If defects or unsafe conditions have been identified in electrical equipment, an employer or contractor: - (a) shall ensure that: - (i) steps are taken immediately to protect the health and safety of any worker who may be at risk until the defects are repaired or the unsafe conditions are corrected; and - (ii) the defects are repaired or the unsafe conditions are corrected as soon as is reasonably practicable; or - (b) shall ensure that the electrical equipment is disconnected and removed from use. 31 Dec 2020 c S-15.1 Reg 10 s30-3. ## Covers for switches, receptacles, connections, etc. - 30-4 An employer or contractor shall ensure that: - (a) all switches, receptacles, luminaires and junction boxes are fitted with a cover that is approved for the intended use and location of the cover; - (b) all wire joints or connections are: - (i) fitted with an approved cap or other approved cover; - (ii) enclosed in an approved box; or - (iii) if the wire joints or connections are not permanently installed, protected from damage by another approved means; and - (c) all dead, abandoned or disused electrical conductors or equipment are removed from the place of employment or disconnected and secured to prevent inadvertent energization. 31 Dec 2020 c S-15.1 Reg 10 s30-4. ## Electrical equipment in tunnel or manhole - 30-5 If electrical equipment is installed in a tunnel or manhole, an employer or contractor shall ensure, if reasonably practicable, that: - (a) the tunnel or manhole is kept clear of water; an…

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## ELECTRICAL POWER LINES Keep a safe distance from electrical power. Never approach power lines with any part of the machine and its load unless all local and national required safety precautions have been taken. Electrocution and death can result from arcing, touching or even being close to a machine that is in contact with or near an electrical source. - · Maintain the maximum possible distance from power lines and never violate the minimum clearance. - · Always contact the nearest electric utility and determine jointly what specific precautions must be taken to insure safety. - · Consider all lines to be power lines and treat all power lines as energized even though it is known or believed that the power is shut off and the line is visibly grounded. - · Use a signal person to observe the approach of any part of the machine or load to the power line. - · Caution all ground personnel to stand clear of the machine and the load at all times. - · If the machine should come in contact with a live electrical source, do not leave the operator's seat. Do not allow anyone to approach or touch the machine. <!-- image --> The reference of the safe distances from high voltage cables are as follows. ## WORKSITES IN URBAN AREAS Set up barricades to prevent unauthorized personnel and/or vehicles from entering the worksite. If working near a road, use a signal person and signs to alert vehicles and pedestrians of potential hazards and falling objects. If needed, use a signal person to direct traffic. The operator should always be alert and follow the signals from the signal person. The operator shall respond to signals only from the appointed signal person, but shall obey a stop signal from anyone at any time. <!-- image --> ## USE WORK LIGHTS - · When operating in dark locations, turn on the work light. If necessary, use additional lighting devices to make the work areas bright enough to operate. - · Stop work if you have poor or limited visibility because of darkness…

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Oregon Administrative Rules Oregon Occupational Safety and Health Division ## WIRING METHODS, COMPONENTS, &amp; EQUIPMENT FOR GENERAL USE - (2) Covers and canopies. All pull boxes, junction boxes, and fittings shall be provided with covers. If metal covers are used, they shall be grounded. In energized installations each outlet box shall have a cover, faceplate, or fixture canopy. Covers of outlet boxes having holes through which flexible cord pendants pass shall be provided with bushings designed for the purpose or shall have smooth, well-rounded surfaces on which the cords may bear. - (3) Pull and junction boxes for systems over 600 volts, nominal. In addition to other requirements in this section for pull and junction boxes, the following shall apply to these boxes for systems over 600 volts, nominal: - (i) Complete enclosure. Boxes shall provide a complete enclosure for the contained conductors or cables. - (ii) Covers. Boxes shall be closed by covers securely fastened in place. Underground box covers that weigh over 100 pounds (43.6 kg) meet this requirement. Covers for boxes shall be permanently marked 'HIGH VOLTAGE.' The marking shall be on the outside of the box cover and shall be readily visible and legible. - (c) Knife switches. Single-throw knife switches shall be so connected that the blades are dead when the switch is in the open position. Single-throw knife switches shall be so placed that gravity will not tend to close them. Single-throw knife switches approved for use in the inverted position shall be provided with a locking device that will ensure that the blades remain in the open position when so set. Double-throw knife switches may be mounted so that the throw will be either vertical or horizontal. However, if the throw is vertical, a locking device shall be provided to ensure that the blades remain in the open position when so set. - (d) Switchboards and panelboards. Switchboards that have any exposed live parts shall be located in per…

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## WIRING DESIGN &amp; PROTECTION - (6) Tools likely to be used in wet and/or conductive locations need not be grounded if supplied through an isolating transformer with an ungrounded secondary of not over 50 volts. Listed or labeled portable tools and appliances protected by a system of double insulation, or its equivalent, need not be grounded. If such a system is employed, the equipment shall be distinctively marked to indicate that the tool or appliance utilizes a system of double insulation. - (v) Nonelectrical equipment. The metal parts of the following nonelectrical equipment shall be grounded: Frames and tracks of electrically operated cranes; frames of nonelectrically driven elevator cars to which electric conductors are attached; hand-operated metal shifting ropes or cables of electric elevators, and metal partitions, grill work, and similar metal enclosures around equipment of over IkV between conductors. ## (8) Methods of grounding equipment. - (i) With circuit conductors. Noncurrent-carrying metal parts of fixed equipment, if required to be grounded by this subpart, shall be grounded by an equipment grounding conductor which is contained within the same raceway, cable, or cord, or runs with or encloses the circuit conductors. For DC circuits only, the equipment grounding conductor may be run separately from the circuit conductors. - (ii) Grounding conductor. A conductor used for grounding fixed or movable equipment shall have capacity to conduct safely any fault current which may be imposed on it. - (iii) Equipment considered effectively grounded. Electric equipment is considered to be effectively grounded if it is secured to, and in electrical contact with, a metal rack or structure that is provided for its support and the metal rack or structure is grounded by the method specified for the noncurrent-carrying metal parts of fixed equipment in paragraph (f)(8)(i) of this section. Metal car frames supported by metal hoisting cables attached to o…

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## OCCUPATIONAL HEALTH AND SAFETY, 2020 - (2) An employer or contractor shall ensure that a portable luminaire used in a damp location or in a metallic enclosure, including a drum, tank, vessel or boiler: - (a) is operated at a potential of not more than 12 volts; or - (b) is supplied by a circuit that is protected by a class A ground fault circuit interrupter. 31 Dec 2020 c S-15.1 Reg 10 s30-9. ## Exposed metal parts - 30-10 An employer or contractor shall ensure that every exposed metal part of portable electrical equipment that is not designed to carry electrical current is connected to ground unless: - (a) the electrical equipment is of an approved, double-insulated type and is clearly marked as such; - (b) power is supplied to the equipment through an isolating transformer having a non-grounded secondary of not more than 50 volts potential; - (c) power is supplied to the equipment through a class A ground fault circuit interrupter; or - (d) power is supplied to the equipment from a battery of not over 50 volts potential. 31 Dec 2020 c S-15.1 Reg 10 s30-10. ## Portable electric power plants - 30-11 (1) An employer, contractor or supplier shall ensure that: - (a) a portable electric power plant that is operated at voltages exceeding 240 volts to ground or is rated in excess of 12.0 kilovolt-amperes is connected to ground in a manner approved pursuant to The Electrical Inspection Act, 1993 ; and - (b) all electrical equipment connected to an ungrounded portable electric power plant: - (i) is of the double insulated type; and - (ii) is clearly marked as being of the double insulated type or is supplied from a class A ground fault interrupting device. - (2) Subsection (1) does not apply if the electrical energy is used for electric arc welding. 31 Dec 2020 c S-15.1 Reg 10 s30-11.