Historical
NEMA WC 56:1986 (R2005)
3.0 Khz Insulation Continuity Proof Testing Of Wire And Cable
Covers a general procedure for continuous voltage proof testing of hook-up wire. Intended to apply primarily to the final inspection of wire for the purpose of finding and eliminating defects prior to shipment or before use.
NEMA: National Electrical Manufacturers Association [nema]