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Illustrated Changes to the NEC, 2005 Edition - Part 2

Article 547

Agricultural Buildings

547.5 Wiring Methods

The rules for GFCI protection of receptacles were relocated from 547.10(B) to 547.5(G). In addition, general-purpose receptacles located in dirt confinement areas for livestock must now be GFCI protected.

(G) GFCI Protected Receptacles
GFCI protection is required for all 15 and 20A, 125V general-purpose receptacles located:
Figure 547-1
(1) In areas having an equipotential plane in accordance with 547.10(A).
(2) Outdoors.
(3) In damp or wet locations.
(4) In dirt confinement areas for livestock.

Author's Comment: The term a€śgeneral-purpose receptaclesa€ť isn't defined in the NEC, but the intent is that GFCI protection isn't required for receptacles installed specifically for equipment such as brooders, incubators, feed mixers, feed grinders, feed conveyors and the like.

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