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Silver metal-clad cable coil with four coloured conductors and lock-nut fittings

Southwire

Southwire 55292301 Metal Clad Building Cable 18 AWG 3C with Ground

SKU CH-8X6J-35FNA

Pre-assembled metal-clad whip with 18 AWG solid conductors, three current-carrying wires plus ground, galvanized steel jacket and 1/2 in lock-nut fittings, rated 600 V

  • TypeWire & Cable
  • 18 AWG solid conductors for reliable current flow
  • Metal-clad galvanised steel jacket resists physical damage
  • Three conductors plus ground in one assembly
  • 600 V rating suits standard building circuits
  • Six-foot whip with 1/2 in lock nut fittings included

Metal Clad Whip 18 AWG 3C

This Southwire metal-clad building cable carries three 18 AWG solid conductors plus a ground inside a galvanized steel jacket rated for 600 V. It arrives as a six-foot whip with half-inch lock-nut fittings and six-inch wire leads already stripped for termination. The assembly is intended for permanent indoor branch-circuit wiring where mechanical protection is required.

Sustained Load Behaviour

The solid conductors and continuous steel armour maintain consistent ampacity during long duty cycles without the derating that can affect flexible cords in tight bundles. Armour also acts as an equipment-ground path, so fault current returns safely even after years of thermal cycling. Voltage drop stays predictable because conductor geometry does not change with vibration or temperature swings.

Build Quality and Connectors

Galvanized steel jacket resists crush, impact and corrosion in commercial ceilings or exposed runs. Factory-attached half-inch lock nuts secure the whip to junction boxes or enclosures without separate connectors. Pre-stripped six-inch leads reduce on-site labour and eliminate nicked strands that can cause hot spots. Product is new and unrestricted for sale in any state.

Highlights

  • 18 AWG solid conductors for reliable current flow
  • Metal-clad galvanised steel jacket resists physical damage
  • Three conductors plus ground in one assembly
  • 600 V rating suits standard building circuits
  • Six-foot whip with 1/2 in lock nut fittings included

Specifications

BrandSOUTHWIRE
TypeWire & Cable

Questions about this item

Will the galvanized steel jacket on this 18 AWG MC cable overheat when carrying its rated 600 V load continuously?

The cable is rated for 600 V; its galvanized steel jacket acts as both armor and ground path, and the 18 AWG solid conductors are sized for the circuit's ampacity, so normal continuous operation within code limits will not cause overheating.

What fittings and tools must I have on hand to terminate the 1/2 in lock nuts included with this 6 ft MC whip?

You need a 1/2 in knockout in the box or enclosure, a lock-nut wrench or large pliers to tighten the supplied lock nuts, and wire strippers for the 18 AWG solid conductors; the whip ships with 6 in leads already stripped.

Can I splice the 6 in leads on this 18 AWG MC whip directly to older 18 AWG solid conductors already in the junction box?

Yes — both are 18 AWG solid copper, so standard twist-on connectors or push-in connectors rated for 18 AWG solid will make a code-compliant splice inside the box.

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