Grounding MC Cable

[AffableCurmudgeon]

Hi there,

I am adding outlets to my garage. I have one outlet in the garage and I will be tapping into it to add another outlet. I have some 12 guage MC cable with two insulated copper conductors and one aluminum non-insulated conductor. I will be tapping into the existing metal box with proper cable clamps and red inserts for the MC cable and will be installing a metal box with proper clamps and inserts for the new outlets. My question is this: Should I snip the aluminum non-insulated wire and just use the MC cable's metal exterior as ground?

Thanks.

 

[Norcal]

Hi there,

I am adding outlets to my garage. I have one outlet in the garage and I will be tapping into it to add another outlet. I have some 12 guage MC cable with two insulated copper conductors and one aluminum non-insulated conductor. I will be tapping into the existing metal box with proper cable clamps and red inserts for the MC cable and will be installing a metal box with proper clamps and inserts for the new outlets. My question is this: Should I snip the aluminum non-insulated wire and just use the MC cable's metal exterior as ground?

Thanks.

What you have is AC, Armored Cable, not MC, Metal clad.

 

[Aceman]

What you have is AC, Armored Cable, not MC, Metal clad.

Are you sure?

Sounds like MCap to me....

http://www.southwire.com/documents/MCAP_BrochureNEW.pdf

 

[AffableCurmudgeon]

It is MCAP. thanks

 

[Aceman]

Your welcome.

Hopefully, that brochure I linked to answered your question.

 

[AffableCurmudgeon]

Yes, it did. Thanks. I will use the metal outer surface as ground.