2020年1月8日 · Generally it also incorporates a GFCI, and the arc fault detection logic shorts hot to ground, triggering the GFCI (and resulting "disconnect"), when an arc fault is detected. While that might be true of some devices (like circuit breakers), …

2014年2月24日 · @BMitch, Good point, the plug in testers don't indicate neutral to ground short at the device, only an open ground or neutral. GFI's detect a difference in current between neutral and hot, not neutral and ground. It is assuming current is going to ground through a path other than the neutral or ground conductor, thus it trips.

2021年6月1日 · An equipment grounding conductor shall not be connected from the ground-fault circuit-interrupter-type receptacle to any outlet supplied from the ground-fault circuit-interrupter receptacle. Informational Note No. 1: Some equipment or appliance manufacturers require that the branch circuit to the equipment or appliance includes an equipment ...

(3) Ground-Fault Circuit Interrupters. Ground-fault circuit-interrupter protected receptacles shall be provided where replacements are made at receptacle outlets that are required to be so protected elsewhere in this Code. (4) Arc-Fault Circuit-Interrupter Protection.

2019年3月12日 · For example many motors will trip the GFCI even though there is no leakage to ground. This is why there is an exception for the refrigerator's outlet. It's a good idea to have that on a circuit of it's own with no GFCI. A GFCI device doesn't generally measure leakage to ground, it compares the current on the hot leg to the current on the ...

2020年11月12日 · It is a 2020 NEC change. 210.8(A) Dwelling Units. All 125-volt through 250-volt receptacles installed in the locations specified in 210.8(A)(1) through (A)⁠(11) and supplied by single-phase branch circuits rated 150 volts or less to ground shall have ground-fault circuit-interrupter protection for personnel.

The NEC simply states "where supplied through a ground-fault circuit interrupter" in this instance, so you can achieve this either by a GFI receptacle, a faceless GFI device, or a GFI breaker. You cannot however use an AFCI breaker, unless it is one of the new (and rare) AFCI/GFCI breakers. Good luck finding one though.

2020年12月30日 · Generally speaking, if the branch circuit is small (e.g., 20A) compared to the main feed (e.g., 100A), the branch circuit will trip first, providing protection to the affected circuit without turning everything else off. Ground Fault Circuit Interrupter - GFCI. A GFCI doesn't look at the total amount of current.

2013年4月9日 · All 125-volt, single-phase, 15- and 20-ampere receptacles installed in the locations specified in (1) through (8) shall have ground-fault circuit-interrupter protection for personnel. (2) Garages, and also accessory buildings that have a floor located at or below grade level not intended as habitable rooms and limited to storage areas, work ...

2013年12月5日 · Replacement of receptacles shall comply with 406.4(D)(1), (D)(2), and (D)(3) as applicable. Arc-fault circuit-interrupter and ground-fault circuit-interrupter type receptacles shall be installed in a readily accessible location. Where a Grounding Means Exists. If there is a grounding conductor in the box, or the box itself is properly grounded.