NEMA WC 56-1986（R2018）涵盖了连接线连续耐压试验的一般程序。主要用于在装运或使用前对电线进行最终检查，以发现并消除缺陷。

NEMA WC 56-1986 (R2018) 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 use.