According to CFR 1926, GFCIs are required on all what receptacles?

According to CFR 1926, GFCIs are required on all what receptacles?

• A. 120-volt, single-phase receptacles
• B. 240-volt receptacles
• C. Outdoor receptacles only
• D. All outlets indoors

Answer: (A)

GFCI protection is required for 120-volt, single-phase receptacles because these are the outlets most commonly used on construction sites for portable tools and lighting, and they are the ones most likely to be exposed to moisture or damp conditions. A GFCI constantly monitors current in the hot and neutral; if it detects even a small imbalance, it trips almost instantly to cut power and prevent electric shock. The standard focuses on these 120-volt single-phase receptacles, not all voltages or locations. While outdoor receptacles often require GFCIs and 240-volt outlets have their own protections, the specific CFR requirement discussed targets 120-volt single-phase receptacles.

GFCI protection is required for 120-volt, single-phase receptacles because these are the outlets most commonly used on construction sites for portable tools and lighting, and they are the ones most likely to be exposed to moisture or damp conditions. A GFCI constantly monitors current in the hot and neutral; if it detects even a small imbalance, it trips almost instantly to cut power and prevent electric shock. The standard focuses on these 120-volt single-phase receptacles, not all voltages or locations. While outdoor receptacles often require GFCIs and 240-volt outlets have their own protections, the specific CFR requirement discussed targets 120-volt single-phase receptacles.