Is BX wiring up to code?
BX is accepted by the National Electrical Code (NEC). Older BX cables without an internal bonding strip are not accepted by NEC. NM cable is also accepted by the NEC.
What does BX stand for in wiring?
Armored cable
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.
Should BX Wire Be Replaced?
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.
How far can you run BX cable?
You can easily find spools of BX cable up to 1,000 feet long. The actual gauge for your project will depend upon the length and the operating load to be fed at the far end.
Can armored cable be used instead of conduit?
Type MC armored cable can be installed in cable tray, racks, hangers, or as a cost-effective replacement for conduit and wire where specified per the National Electrical Code (NEC).
Where can I find the electrical code for BX cable?
The Electrical Codes about BX Cable may be found in the NEC Code Articles Section 348. Is it safe to just lay wiring on top of the rafters?
Do you need to replace bx wire sheathing?
If you rip back the metal sheathing, you may find that the insulation is still good. If old BX wiring is in good condition and can carry today’s higher power demands, there is usually no reason to replace it. Unlike the older knob-and-tube wires from the early 20th century, the wire sheathing will not turn gummy and degrade over time.
When was BX wiring first used in homes?
BX wiring (also known as armored cable) is the 2nd generation of wiring used in homes. It first appeared in the 1903 National Electrical Code (NEC) book. It became popular in the 1920s, and it was the main wiring type by 1932. BX wiring was used until the late 1940s, when it was replaced by early Romex (non-metallic sheathed cable).
Can a bx wire run through rigid metal conduits?
However, with the exception of electrical wires that run through rigid metal conduits, no other type of electrical cable has as strong an outer casing as does BX cable. Wires within the armor may display degradation of their rubber insulation. But this may just be at the exposed ends.
