While the appearance of Metal Clad (MC) and Armored Cable (AC) connectors may be similar, the misuse of an AC cable connector can be significant enough to cause an unsafe installation with metal clad cable.

During the listing process at Underwriters Laboratories (UL), MC connectors are subjected to more stringent testing than a typical AC connector. Additional tests are necessary to comply with application requirements of metal clad cable in the National Electrical Code (NEC).

UL listed metal clad cable connectors are suitable for grounding when installed in accordance with the NEC. 'Dry Type' MC connectors may be 'concrete tight' when taped and used with pvc coated metal clad cable (pvc jacket stripped back to fitting end stop).

Never use a direct bearing set screw type MC connector with aluminum sheath metal clad cable; the fitting is not designed for this purpose and the screw will pierce the sheath possibly causing a short.

Always refer to the carton label for listed cable type (corrugated, interlocked, or smooth) and material (aluminum or steel). The label will also specify the cable size range. Do not use cable smaller than noted on label; the clamping mechanism on the fitting will not function correctly and grounding integrity will be compromised.

Always use Bridgeport's UL listed Metal Clad Fittings





Note: Above comments are not an interpretation of the National Electrical Code (NEC) or local regulations. Always consult your local electrical inspector for requirements in your area.

Please send your comments and questions to attn: Engineering at Bridgeport Fittings, Inc., Phone 203.377.5944, Fax: 203.381.3488 or email:eng@bptfittings.com