Grounding and Bonding

The noncurrent-carrying metal parts of portable and/or plug-connected equipment shall be grounded. Portable tools and appliances protected by an approved system of double insulation or its equivalent need not be grounded. Where such an approved system is employed, the equipment shall be distinctively marked.

Exposed noncurrent-carrying metal parts of fixed electrical equipment, including motors, generators. frames and tracks of electrically operated cranes, electrically driven machinery, etc., shall be grounded.

Extension cords used with portable electric tools and appliances shall be of the approved three-wire type.

All temporary wiring shall be effectively grounded in accordance with the National Electrical Code.

Temporary lights shall be equipped with guards to prevent accidental contact with the bulb; however, guards are not required when the construction of the reflector is such that the bulb is deeply recessed. Temporary lights shall be equipped with heavy-duty electric cords with connections and insulation maintained in safe condition. Temporary lights shall not be suspended by their electric cords unless cords and lights are designed for this means of suspension. Splices shall have insulation equal to that of the cable. Cords shall be kept clear of working spaces and walkways or other locations in which they are readily exposed to damage. Portable electric lighting used in moist and/or other hazardous locations (For Example: drums, tanks, and vessels) shall be operated at a maximum of 12 volts.