Core TradesQuestion 77 of 700
Temporary power on a construction site uses receptacles that workers plug tools into. To protect workers from shock, these 125-volt receptacles must be protected by:
a.Ground-fault circuit-interrupter (GFCI) protection
b.Arc-fault protection only
c.A time-delay fuse only
d.A surge protector
Explanation
Temporary construction receptacles used by personnel require GFCI protection to guard against ground-fault shock hazards in wet, rough field conditions. Arc-fault devices protect against arcing faults (fire), not shock; fuses and surge protectors do not provide personnel ground-fault protection.
Law Reference: 2025 CA Electrical Code (based on NEC)Practice all 700 questions free — no signup required.
Related questions on this topic
- CALCULATION: Concrete costs $165 per cubic yard. A footing pour needs 100 cubic feet of concrete plus 8 percent for waste. What is the approximate concrete cost?
- A 120-volt lighting circuit runs a long distance and the fixtures at the far end appear dim. The MOST likely electrical cause and its fix is:
- CALCULATION: A general lighting load for a dwelling is estimated at 3 volt-amperes per square foot. For a 2,000-square-foot house, what is the general lighting load in volt-amperes?
- In a typical dwelling, the interior metal water piping and the metal gas piping are required to be:
- An electrical panel is being installed. Regarding circuit identification, the code requires that:
- CALCULATION: A single-phase load draws 24 amperes at 240 volts. What is the apparent power in kilovolt-amperes (kVA)?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB General Building (B) Trade Examination · How we review