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Is MC cable the same as BX?

Is MC cable the same as BX?

For those who are not familiar with the difference between the two, BX has a mechanical ground as part of the armored cable wall or jacket, where MC has an “extra” green wire that is used for grounding purposes. Those are the only differences between the two cables.

What is MC cable used for?

Metal clad cable can be installed for service, feeder, and branch circuitry. In other words, MC is useful for wiring your main electrical panel from your service head, your sub panel (if applicable) to your main electrical panel, and your individual outlets and lighting circuits from your main electrical panel.

What is BX wire?

Going under alternative names such as metallic sheathed cable, type AC, MC, Greenfield, or armored cable, BX cable is a collection of plastic-coated insulated wires (typically 14- or 12-gauge), bundled together and protected by a ribbon-like metal sheathing. This casing needs to be attached to metal boxes.

Is BX wiring safe?

The actual name for it is “Armored Cable” or AC, but many people call it by its original trade name “Greenfield” or just BX. Modern BX wiring, properly installed, is safe. It is acceptable to the latest version of the National Electrical Code (2017 NEC Article 320).

Why is it called BX?

Armored cable (AC) first appears in the 1903 NEC. There were originally two initial versions of armored cable. One was called “AX” and the other “BX,” with the “X” standing for “experimental.” The “BX” version became the one that eventually was produced, and hence the name “BX” became the common name.

Is BX cable legal in Chicago?

Getting to the BX issue, both MC cable and Greenfield (FMC) are allowed without length restriction (for residential, anyway) when being fished into walls/ceilings for remodel work. If you strip away the entire wall/c’lg surface then an inspector would tend to want conduit installed if practical.

What is MC Cable vs conduit?

Interlocked armor is flexible, unlike conduit or even continuously welded armor, ensuring damage will not affect inner conductors. It is also more easily installed where complex, close-spaced bends would be difficult for conduit. No specialty cutting or bending tools are needed for installation.

Does MC cable need conduit?

Although the Hazardous Locations section of NEC Chapter 5 requires threaded rigid conduit (RMC) or threaded steel intermediate conduit (IMC) for the real hardcore hazardous (classified) locations, MC cable is allowed in some installations with some listing restrictions.

Can you mix Romex and BX?

The cable and connector is the ground with BX. As a side note to Speedy, Here in my area you cannot run romex directly to the furnace you must use bx at the furnace. So you can run bx all the way to the main panel with a switch in between or like I do, romex to a box and then bx to the furance as you have.

Do I need to replace BX wiring?

BX is much safer If there is an issue it is inside the flexible conduit and that metal conduit is quite a bit of protection. Replacing breakers may or may not be possible with your existing panel and again your wiring is in conduit so I would not be concerned.

What is the difference between MC Cable and BX?

For those who are not familiar with the difference between the two, BX has a mechanical ground as part of the armored cable wall or jacket, where MC has an “extra” green wire that is used for grounding purposes. Accordingly, what is BX cable used for?

Can you use BX cable in a raceway?

They can be installed in a cable tray or in any raceway. In this regard, can you use BX cable outside? BX Cable and Wiring Basics A chief distinction between BX and NM is that BX can achieve grounding through the outer metal casing. This casing needs to be attached to metal boxes.

What’s the difference between AC and MC Cable?

Armored cable (AC) first appears in the 1903 NEC. There were originally two initial versions of armored cable. The biggest difference between the two cable systems is that MC has full size ground wire while AC uses a combination of the jacket and a thin bonding strip or wire to function as the equipment ground.

What’s the difference between a Mac and a MC name?

Similarly, the assertion that Mac names are Protestant while Mc names are Catholic doesn’t have a shred of truth to it. They both just mean “son of” and can be used by anyone of either descent or religion.