What is MC connector?
MC connectors are specially designed for low contact resistance and good stable connections under a wide range of conditions. MC means “multi-contact.” The term “multi-contact” comes from the fact that the connectors have a bunch of little spring loaded gold plated fingers that ensure good contact.
Is Mc an FMC?
Flexible metal conduit (FMC) is commonly called “Greenfield.” The main difference between MC cable and FMC is that FMC doesn’t have the insulated wires pre-installed; you have to pull them through instead. It also allows you to add wires in the future, something you can’t do with MC cable.
What is the difference between Romex and MC?
The primary difference when comparing Romex wire versus MC cable is the sheathing. MC cable has a metal casing, while Romex has a non-metallic sheath.
What is FMC cable?
Flexible metal conduit (FMC) has a spiral construction that enables it to snake through walls and other structures. FMC protects electrical wiring in commercial and industrial buildings. Liquidtight flexible metal conduit (LFMC) is a special type of FMC that has a plastic coating.
Can MC cable be exposed?
These cables can be installed either indoors or outdoors and in exposed and concealed locations. They can be direct buried, where identified for such use. Type MC cable with a nonmetallic jacket can also be used in a wet location.
Why use MC Cable vs Romex?
Safety: Compared to Romex, MC cable is safer to install due to its metallic sheath. This sheath helps protect against accidental shearing and penetration, reducing the risk for accidental wire exposure. Romex sheathing is easily penetrated or sheared, making it less safe unless run through protective conduit.
When Should MC cable be used?
Type MC cables are widely used in 600 volt and MV power, lighting and fixture whip control applications. They are permitted for use on services, feeders and branch circuits for power, lighting, control and signaling circuits in accordance with Article 330 and 725 of the NEC.
Can you run MC cable exposed?
Section 330.15 states: Exposed runs of cable, except as provided in 300.11(A), shall closely follow the surface of the building finish or running boards. Exposed runs shall also be permitted to be installed on the underside of joists where supported at each joist and located so as not to be subject to physical damage.