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NOTE: This is an unformatted excerpt from our online fire protection training library.

General Requirements in the NEC

Summary

Summary

General requirements of the National Electrical Code (NEC) are included in Article 110, which covers approval, installation and use, access and required space for equipment. All equipment installed under the NEC must be approved by the authority having jurisdiction (AHJ). Typically, the AHJ will prefer that listed equipment be used when possible, because listing means the equipment has been evaluated by an independent agency. The NEC addresses the need to interrupt unintended fault current by providing interrupting ratings and short-circuit current ratings for equipment.
The NEC also addresses safety through the general requirement that installations must be made in a "neat and workmanlike manner," as well as by specific mandates, like requiring unused openings to be closed up and requiring equipment to be protected from damage from paint or other construction activities. Equipment must be marked to avoid various hazards, including warnings of flash hazard, marking of available fault current, identification of disconnecting means and accurate labeling of switchboards and panelboards. NEC requirements also cover indoor and outdoor equipment enclosures and space requirements for the areas in which equipment is housed.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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