Once again I'm confused - or maybe I just don't understand the Code, again.
Essentially, 250.114 defines under what conditions exposed non-current-carrying metal of cord-connected equipment is required to be connected to the EGC. The Exception to that says that Listed equipment covered in 250.114(2) through (4) is not so required if it is double-insulated.
But the Exception specifically omits 250.114(1) which covers hazardous (classified) locations.
Does this mean that Listed double-insulated products may not be used in the Classified locations of 500 through 517 and that only products with grounded accessible metal are allowed?
If the answer is yes, what is the rationale?
Does that mean if someone is doing a repair with a double-insolated, cord-connected, drill in a Classified area, say a hospital, he/she is in violation of the NEC?
As usual, your sage advice is solicited.
Tx.
Heinz R
Essentially, 250.114 defines under what conditions exposed non-current-carrying metal of cord-connected equipment is required to be connected to the EGC. The Exception to that says that Listed equipment covered in 250.114(2) through (4) is not so required if it is double-insulated.
But the Exception specifically omits 250.114(1) which covers hazardous (classified) locations.
Does this mean that Listed double-insulated products may not be used in the Classified locations of 500 through 517 and that only products with grounded accessible metal are allowed?
If the answer is yes, what is the rationale?
Does that mean if someone is doing a repair with a double-insolated, cord-connected, drill in a Classified area, say a hospital, he/she is in violation of the NEC?
As usual, your sage advice is solicited.
Tx.
Heinz R