mc cable support

Status
Not open for further replies.
M

monkey

Senior Member
Location
Arizona
Are there caddy clips for clipping mc onto the grid, with holes in them for the support wires? Or does everyone just hang mc from the structure with "X" clips and seismic wires? I was just looking for some good ideas for neat installations that would be code compliant. What does everyone use to fasten the seismic wire to the mc, just the X clips that you fold over?

Also, the only way I can figure out how to secure the mc within 12 inches of a caddy box is to just wire it to the caddy hanger bar.
 
I've been using the "bat wings" forever. Caddy certainly has other such products in their catalog, but none quite so available and as common as the bat wings. For low cost and famaliarity to the installers, that seems like the way to fly. Too much attention to making a "beautiful" install above the suspended ceiling starts to chew away at the bottom line unnecessarily. Nothing wrong with doing nice work, but there's no real good reason to make artwork out of semi-concealed wiring.

monkey said:
Also, the only way I can figure out how to secure the mc within 12 inches of a caddy box is to just wire it to the caddy hanger bar.
Click to expand...
That's pretty much what most people do, in my observation. Sometimes I'll run a tek screw into the hanger bar to affix a one-hole MC strap if I have one handy and the hanger bar is wide enough.
 
monkey said:
Also, the only way I can figure out how to secure the mc within 12 inches of a caddy box is to just wire it to the caddy hanger bar.
Click to expand...

Stop trying to figure it out. If you are roping lights , just make sure you have a strap within 6' of termination.

Check out 330.30(D)(2) , especially the last sentence. Save youself a lot of headache and rest easy knowing your code compliant


ibew441dc
 
Last edited:
benaround,

I agree with your statement. It sure does help in the field , having this language in the code.

ibew441dc
 
For years, I have been making sure that the outer wrap of MC, FMC, etc, is at the upper end of such a drop, and use angle connectors if that eliminates a bend, which is almost always. I've noticed that angle connectors usually clamp onto more of the sheath.

If there's no unsupported end, but one end is an angle connector and one isn't, I prefer the angle connector on the inner wrap end. It seems that the outer wrap end generally clamps more firmly, because the other end gets smaller more easily.
 
Status
Not open for further replies.
Top