Mcap

[quogueelectric]

With the introduction of mcap into the field you are given the choice of either cutting flush or entering the box with it.
Now I realize that almost everyone will just cut it flush however if for some reason you absolutely had to enter the al ground into the box how could this be terminated??
Purple wirenuts are not rated for al to al only the king alumicons I know of and I have only seen them with 3 connections. Would a ground screw be acceptable?
Could you enter this into a plastic box?? Lets say someone was daisy chaining Em packs bringing the conductors right into the back of a plastic fixture.
What are your thoughts or suggestions.

 

[Buck Parrish]

What is MCAP ?

 

[C3PO]

I would think a ground screw would be acceptable or a mech lug. But that is suppsed to be the selling point on MCAP is that you don't have to run the EGC into the box.

 

[quogueelectric]

What is MCAP ?

MCAP>>>>>>http://www.iaei.org/subscriber/magazine/06_e/temblador.html

 

[macmikeman]

I would think a ground screw would be acceptable or a mech lug. But that is suppsed to be the selling point on MCAP is that you don't have to run the EGC into the box.

Since it got intoduced, I have been waiting for this thread. I haven't used it yet myself, but was wondering how many local inspectors will try to require the bonding conductor become a "grounding wire" inside the boxes. I don't think the plastic boxes will fly- but I'm nowhere near my code book.

 

[wireguru]

with regard to inspectors wanting the bonding strip to enter the box as a grounding conductor, i would ask them if they require the copper strip thats embedded in sealtite to enter the box too :roll:

MCAP is so you dont have to deal with the grounding conductors. If you need a grounding conductor in the box due to a spec or something then why even use MCAP at all?

 

[Pierre C Belarge]

When splicing Al-Al, one of the methods suggested is to introduce a copper conductor to the splice so as to conform to the Al-Al restriction.

 

[peter d]

What are your thoughts or suggestions.

Cut it off and be done with it.

 

[roger]

Cut it off and be done with it.

I agree. This is what I have always done with AC and HCFC.

Roger

 

[peter d]

I agree. This is what I have always done with AC and HCFC.

Roger

I have no idea why anyone would attempt to terminate the bond/EGC/whatever the-heck-you-would-call-it in MC-Ap when it's designed to be cut off.

 

[walkerj]

If it they are daisychaining plastic fixtures, both the in and out's armor must be bonded to each other or the out won't be grounded.
I think thats what cow is getting at.

 

[roger]

If it they are daisychaining plastic fixtures, both the in and out's armor must be bonded to each other or the out won't be grounded.
I think thats what cow is getting at.

And how would this be any different if you used EMT or any other metallic raceway?

Roger

 

[peter d]

If it they are daisychaining plastic fixtures, both the in and out's armor must be bonded to each other or the out won't be grounded.
I think thats what cow is getting at.

With a duplex connector there is no issue.

 

[walkerj]

With the introduction of mcap into the field you are given the choice of either cutting flush or entering the box with it.
Now I realize that almost everyone will just cut it flush however if for some reason you absolutely had to enter the al ground into the box how could this be terminated??
Purple wirenuts are not rated for al to al only the king alumicons I know of and I have only seen them with 3 connections. Would a ground screw be acceptable?
Could you enter this into a plastic box?? Lets say someone was daisy chaining Em packs bringing the conductors right into the back of a plastic fixture.What are your thoughts or suggestions.

And how would this be any different if you used EMT or any other metallic raceway?

Roger

How are the two raceways bonded together without any metallic interface?

A duplex connector would work but I don't think that is how it is setup.

 

[roger]

How are the two raceways bonded together without any metallic interface?

That is my point, you would have to address any metallic raceway in your scenario, and along with Peters suggestion (which wouldn't work for say EMT) you could use bond bushings and a jumper between them, the aluminum runner could still be cut off.

Roger

 

[quogueelectric]

When splicing Al-Al, one of the methods suggested is to introduce a copper conductor to the splice so as to conform to the Al-Al restriction.

I wonder if the purple wirenut is rated for a grounding conductor or even the alumicon for that matter I would have to read the box. Maybe the I just read a gb greenie box and it is cu to cu only. 14-10awg 600v listed 63m2 ground connector. The purple wirenuts is a good idea by putting a piece of cu in there dont know if they are listed for grounding though.

 

[quogueelectric]

I have no idea why anyone would attempt to terminate the bond/EGC/whatever the-heck-you-would-call-it in MC-Ap when it's designed to be cut off.

It is designed to be terminated both ways and I have installed it cut off however I am trying to forsee future isues if the ground wire which just happens to be aluminum creating all kinds of problems for the installer before I have a crew of guys installing it standing around hemming and hawing and not knowing what to do with it. It is always to your advantage to know more than one way to skin a cat.

 

[quogueelectric]

And how would this be any different if you used EMT or any other metallic raceway?

Roger

They dont have an aluminum oversized grounding conductor.

 

[peter d]

... before I have a crew of guys installing it standing around hemming and hawing and not knowing what to do with it.

Cmon, you're not telling me these guys are so dumb that they can't comprehend basic instructions on how to install this stuff, are you?

 

[quogueelectric]

Cmon, you're not telling me these guys are so dumb that they can't comprehend basic instructions on how to install this stuff, are you?

How smart could they be to work for a cow?? However mfgs instructions show it can be terminated BOTH ways I need to figure out how to do this code compliantly.