electrical rough
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Rosie's answer
Published by SALUSI wasn't able to find specific documentation on electrical rough-in safety procedures and inspection requirements in our current safety knowledge base, but here are industry-standard safety guidelines:
When working with or around electricity, employers must ensure that workers do not work near any energized electrical conductor or equipment unless adequate protective guards or equipment are provided and workers are using adequate protective equipment. Employers must ensure that workers in a manhole or tunnel have continual communication with another competent worker when working on any energized electrical conductor or equipment having a potential in excess of 600V. Manholes containing energized electrical conductors or equipment must also have approved insulated mats or platforms to protect workers while at work. [1] [1] [1]
Before working on electrical conductors or equipment that must be de-energized, the worker in charge must open, lock, and tag any switching device which supplies electrical energy to the conductors or equipment being handled. After work has been completed on de-energized electrical conductors, utility lines, or equipment, the worker in charge of the work shall determine that all workers are clear of work areas and authorize the energizing of the electrical conductors, utility lines, or equipment. [1] [1]
When operating equipment near power lines, workers must maintain specific minimum approach distances. For alternating current, the minimum clearance distance is 10 feet for voltages up to 50kV, 15 feet for voltages over 50kV to 200kV, 20 feet for voltages over 200kV to 350kV, 25 feet for voltages over 350kV to 500kV, 35 feet for voltages over 500kV to 750kV, and 45 feet for voltages over 750kV to 1000kV. [2] [2] [2] [2]
Portable electric equipment should be handled in a manner that does not cause damage, and flexible electric cords connected to equipment should not be used for raising or lowering the equipment. Flexible cords should also not be fastened with staples or hung in a way that could damage the outer jacket or insulation. Portable cord and plug-connected equipment and flexible cord sets should be visually inspected before each shift for external defects or evidence of possible internal damage. [3] [3]
In proximity to electrical equipment operating at over 600 V that may be accessible to workers, notices reading "Danger-High Voltage" must be placed in prominent positions. [1]
Sources used for this answer
[1] OHS Act General Regulations (PEI Reg. EC180/87)
Page 72
Open source documentSource excerpt
# PART 36 - ELECTRICITY (cont.) ## Protective gloves (cont.) PART 36 - ELECTRICITY Section 36.7 Occupational Health and Safety Act General Regulations electrical lines or equipment are provided with guards which will effectively prevent contact by any worker or by any equipment being used or handled. - Idem (6) Guards shall meet the specifications of an authority acceptable to the Director. - Notices (7) Notices reading "Danger-High Voltage" shall be placed in prominent positions in proximity to electrical equipment operating at over 600 V that may be accessible to workers. (EC180/87; 126/21) - 36.7 De-energizing procedures The employer shall ensure that before a worker is permitted to work on electrical conductors or equipment that must be de-energized, the worker in charge of the work shall open, lock and tag any switching device which supplies electrical energy to the conductors or equipment being handled. (EC180/87; 126/21) - 36.8 Idem The employer shall ensure that before a worker is permitted to work on electrical utility lines or equipment that must be de-energized, the worker in charge of the work shall ensure that such are properly de-energized. (EC180/87; 126/21) - 36.9 Re-energizing procedures After work has been completed on de-energized electrical conductors, utility lines or equipment, the worker in charge of the work shall (a) determine that all workers are clear of work areas; and (b) authorize the energizing of the electrical conductors, utility lines or equipment. (EC180/87; 126/21) ## 36.10 Protective guards and equipment - The employer shall ensure that workers shall not work in or around any place or structure in proximity to energized electrical conductors or equipment unless (a) adequate protective guards are provided; or (b) the workers are wearing adequate protective equipment. (EC180/87; 126/21) ## 36.11 Communication requirements The employer shall ensure that a worker shall not work on any energized electrical cond…
[2] JLG - Boom Lifts : 600S, 660SJ - Operation (PN 31215033)
Page 22
Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>0to 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200KV</td><td>15(5)</td></tr><tr><td>Over 200KV to 350KV</td><td>20(6)</td></tr></table> Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Over 350 KV: to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215033
[3] General Industry Safety and Health Standards (MIOSHA)
Page 13
Open source documentSource excerpt
# 1910.334 USE OF EQUIPMENT - 1910.334(a) Portable electric equipment. This paragraph applies to the use of cord and plug connected equipment, including flexible cord sets (extension cords). - 1910.334(a)(1) Handling. Portable equipment shall be handled in a manner which will not cause damage. Flexible electric cords connected to equipment may not be used for raising or lowering the equipment. Flexible cords may not be fastened with staples or otherwise hung in such a fashion as could damage the outer jacket or insulation. - 1910.334(a)(2) Visual inspection. - 1910.334(a)(2)(i) Portable cord and plug connected equipment and flexible cord sets (extension cords) shall be visually inspected before use on any shift for external defects (such as loose parts, deformed and missing pins, or damage to outer jacket or insulation) and for evidence of possible internal damage (such as pinched or crushed outer jacket). Cord and plug connected equipment and flexible cord sets (extension cords) which remain connected once they are put in place and are not exposed to damage need not be visually inspected until they are relocated. 1910.334(a)(2)(ii) If there is a defect or evidence of damage that might expose an employee to injury, the defective or damaged item shall be removed from service, and no employee may use it until repairs and tests necessary to render the equipment safe have been made. 1910.334(a)(2)(iii) When an attachment plug is to be connected to a receptacle (including an on a cord set), the relationship of the plug and receptacle contacts shall first be checked to ensure that they are of proper mating configurations. ## 1910.334(a)(3) Grounding type equipment. 1910.334(a)(3)(i) A flexible cord used with grounding type equipment shall contain an equipment grounding conductor. - 1910.334(a)(3)(ii) Attachment plugs and receptacles may not be connected or altered in a manner which would prevent proper continuity of the equipment grounding conductor at the point …
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