Figure 2-2. There are three methods of providing GFCI protection for construction sites.

DOE-HDBK-1092-2004

Ground-fault protection for personnel shall be provided for temporary wiring installations utilized to

supply temporary power to equipment used by personnel during construction, remodeling,

maintenance, repair, or demolition activities.

For temporary wiring installations;

All 120-V, single-phase, 15-, 20-, and 30-A receptacle outlets that are or are not a part of

the permanent wiring of the building or structure and that are in use by employees shall

have GFCI protection for personnel.

GFCI protection or an assured equipment grounding program (See Section 8.2) for all other

receptacles shall be used to protect against electrical shocks and hazards.

Portable GFCIs shall be trip-tested according to the manufacturer's instructions.

Figure 2-2. There are three methods of providing GFCI protection for construction sites.

2.7.3

ARC FAULT CIRCUIT INTERRUPTERS (AFCIs)

One of the more promising techniques for improvement of performance of wiring systems with

respect to arc-generated fires and intermittent equipment operation is the possibility of using the

arc voltage and current signatures to trip circuits by an AFCI. An AFCI is a device intended to

provide protection from the effects of arc faults by recognizing characteristics unique to arcing

2-7