Unusual MC fitting

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Pierre C Belarge said:
They would have to take the wirenuts back off to install the fixture. I see it as actually saving time, especially on a large job.
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480sparky said:
Didn't know it was for a luminaire. Just assumed it was a j-box. Then why put one on the grounds? They'd have to hook up the luminaires' ground as well.
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Not necessarily. For instance a plastic fixture, such as an exit sign, does not require an EGC connection.

But...
tkb said:
I would have folded the ground in first.
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...too.
 
OK, now that we've established that the set screw connector is only suitable for steel jacketed MC cable, does anyone actually use them on steel jacketed MC cable (MC Tuff for instance)?

Of do you just use the saddle grip type connector for everything?
 
tkb said:
Ground clip is OK, but I would use a screw myself.
The screw doesn't have to be green or listed :rolleyes:, but you need to drill the wall behind the box so you can screw it in. That is probably why they used the clip.
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Is there anything prohibiting the ground screw from being in
the side of the box? I have done this because I couldn't
drill the back, but I could drill and tap the side, didn't
have a clip, and did not believe it to be a code violation.
 
rexowner said:
Is there anything prohibiting the ground screw from being in
the side of the box? I have done this because I couldn't
drill the back, but I could drill and tap the side, didn't
have a clip, and did not believe it to be a code violation.
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Sounds good to me. Any threaded hole or nut and bolt will do.
 
Pierre C Belarge said:
Even though the box says UL, I am wondering if these are really UL listed.
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I'm curious why you're doubting the listing. I've never seen that brand of fittings around here, but they look just like every other set screw AC cable connector on the market. And I'd also say they are just fine when used properly, which these particular electricians clearly did not.
 
I've seen a lot of those connectors in old houses that actually had BX cable (the stuff with the cambric insulation). Try 'em once on aluminum MC and you won't do it again: The connector screw punches a hole straight through the armor and can dig into the conductors.

Like most things in life, I learned this the hard way....

-John
 
peter d said:
OK, now that we've established that the set screw connector is only suitable for steel jacketed MC cable, does anyone actually use them on steel jacketed MC cable (MC Tuff for instance)?

Of do you just use the saddle grip type connector for everything?
Click to expand...
I've been using the connectors lately that just have teeth inside. Just jam the cable in. No screwdriver required. Pretty slick. The upcharge nearly offsets the labor savings, and the redhead is already part of the connector.
 
mdshunk said:
I've been using the connectors lately that just have teeth inside. Just jam the cable in. No screwdriver required. Pretty slick. The upcharge nearly offsets the labor savings, and the redhead is already part of the connector.
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The Arlington "Snap2It"? Yes, they are quite slick. I like how they are a toolless installation other than stripping the armor.
 
peter d said:
The Arlington "Snap2It"? Yes, they are quite slick. I like how they are a toolless installation other than stripping the armor.
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When they first came out, I thought of backstabbed recpetacles right away. I was suspicious of them for a long time. Eventually, I shorted one out with an extra truck battery for probably 20-30 seconds. I started to get sparkles between the coils of the MC armor, but the teeth of the conntctor-to the MC cable were unaffected. SOLD!
 
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