In article , "Toller" wrote:
As I understand it, they are pretty much the same except that MC has a
ground and BX relies on the jacket as the ground. Any other differences?

BX, at least the old stuff, is clad in steel. MC is aluminum-clad.

Either harder to use?

BX, by a long shot, because the armor is so much harder to cut.

How do you use the ground on BX, at the breaker box and junction box? Does
it simply go through the mechanical connection at the box, or is there a
wire to attach?

That's the way the old stuff worked in theory -- but it had some problems.
Forget BX. MC is waaaaaaay easier to work with.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.