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WORK ON
ELECTRICAL EQUIPMENT
The employer must ensure that only a competent worker works on any energized electrical conductor or equipment. A competent person when applied to electrical installations is a person who is the holder of a subsisting license issued under the Electrical Inspection Act. (Occupational Health and Safety Act General Regulations EC180/87, 36.1)
The employer must ensure that employees do not work on energized electrical conductors or equipment unless adequate protective devices specified for protection against the voltage involved are used. (Occupational Health and Safety Act General Regulations EC180/87, 36.5)
The employer must ensure that before an employee is permitted to work on electrical equipment that must be de-energized, the employee in charge of the work ensures that the equipment is properly de-energized. (Occupational Health and Safety Act General Regulations EC180/87, 36.7)
After work has been completed on de-energized electrical equipment, the employee in charge of the work must determine that employees are clear of work areas and authorize the energizing of the equipment. (Occupational Health and Safety Act General Regulations EC180/87, 36.9)
When working on energized electrical equipment operating at a potential greater than 120 V nominal up to 5,000 V phase to phase the employer must provide and the employee must use rubber gloves having a minimum rating of 10,000 V, shields, and other necessary equipment. (Occupational Health and Safety Act General Regulations EC180/87, 36.5)
The employer must ensure that
where portable electrical conductors are used, a sufficient number of fixed
outlets are installed at points where they are safely accessible.
The employer must ensure that rubber covered cord is used for portable electrical tools, extension lamps, etc. that may be subjected to hard usage. (Occupational Health and Safety Act General Regulations EC180/87, 36.27 – 36.28)
The
employer must ensure that armouring and sheathing of electrical cables, metal
conduits and their fittings, and other non-current carrying metal parts of electrical
equipment are effectively grounded.
Grounding
conductors must be of low resistance and of sufficient capacity to safely carry
the heaviest flow of current that may occur from a breakdown of the insulation
of the equipment. Grounding conductors must be mechanically protected at places
where they are likely to be damaged.
Where it is impossible or impracticable to enclose electrical circuits or current-carrying parts of electrical equipment operating at 50 V a.c. or more to ground, accidental contact must be prevented by installing the circuits or equipment in rooms or enclosures that are accessible to authorized persons only, or on platforms elevated to exclude unauthorized persons. (Occupational Health and Safety Act General Regulations EC180/87, 36.29 – 36.32)
The employer must ensure that access to switches and meters is clear of obstructions at all times.
All electrical distribution switches and controls must be clearly marked to indicate the equipment or machinery they serve.
A main service switch and secondary electrical panel must be securely mounted on substantial supports, be kept free of obstruction for 3.2 feet to the front, and be within easy reach of an authorized person. A service switch must have a suitable device for locking it open. (Occupational Health and Safety Act General Regulations EC180/87, 36.41 – 36.42)
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