GFCI requirements are expanded to include 250-volt receptacles and whose distance to points of interest (sinks, spigots, etc) can be measured through doorways

Definitions

GCFI: Stands for Ground-Fault Circuit-Interrupter. When there is an unbalanced current as a result of one of the conductors coming into contact with a grounded object (such as through a person’s body), the receptacle automatically shuts off.

The Code: Section 210.8 Ground-Fault Circuit-Interrupter Protection for Personnel

Ground -fault circuit-interrupter protection for personnel shall be provided as required in 210.8(A) through (F). The ground-fault circuit-interrupter shall be installed in a readily accessible location.

For purposes of this section, when determining the distance from receptacles, the distance shall be measured as the shortest path the supply cord of an appliance connected to the receptacle would follow without piercing a floor, wall, ceiling, or fixed barrier, or the shortest path without passing through a window.

(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 a single-phase branch circuits rated 150 volts or less to ground shall have ground-fault circuit-interrupter protection for personnel.

Other Notes

  • The inclusion of 250-volt and amperes other than 15 and 20 means that GFCI protection will be required for most receptacles in areas specified by 210.8(A)
  • 250-volt receptacles presented similar shock hazards to 125-volt receptacles that necessitated GFCI protection
  • The reason for removing doorways as a barrier for measurement probably came about because anyone can plug an appliance (e.g. blow dryer) into the bedroom of a hotel room, then use it over the sink and have the potential to get shocked.