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Grounding versus Bonding

PART VI.

Sections

250.110 Fixed Equipment Connected by Permanent Wiring Methods—General.

Exposed metal parts of fixed equipment likely to become energized must be grounded (bonded) to an effective ground-fault current path where the fixed equipment is:

(1) Within 8 ft vertically or 5 ft horizontally of earth or grounded metal objects
(2) Located in a wet or damp location
(3) In electrical contact with metal
(4) In a hazardous (classified) location [Articles 500 through 517]
(5) Supplied by a wiring method that provides an equipment grounding (bonding) conductor of a type specified in 250.118
(6) Supplied by a 277V or 480V circuit

Exception 3: Double-insulated equipment isn’t required to be grounded (bonded) to an effective ground-fault current path.


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