AC Cable Connectors

[Deker]

I've got some existing steel AC cable (14-2 with bonding strip) that I need to modify for a new receptacle location in an outbuilding. I'll be connecting it to a new 4 square box, and I'll also be running some new MC cable from the box to another new receptacle along the wall.

I purchased these snap connectors for the MC and these saddle connectors with a set screw and locknut for the AC. However, I just noticed that the snap connector is UL listed for grounding.

So, I have a few questions:

1. Can I use the snap connector with the existing AC and maintain adequate ground?
   
   
2. If so, do I still need to provide a red head on the AC since it looks like there's one already built into the connector?
   
   
3. Somewhat related, just to confirm my understanding...if I'm connecting to a concentric / eccentric knockout but the voltage is less than 250, I am not required to provide a grounding bushing, correct? And if I'm removing the largest ring on a concentric / eccentric knockout, the requirements for grounding bushings on concentric / eccentric knockouts do not apply?

 

[Deker]

Bump. Any help is greatly appreciated.

 

[alfredeneuman]

The snap in connector is approved for grounding

You're required to use redheads on all AC cable, regardless of the insulated throat on the fitting.

You don't need any additional anything on voltages under 250-Ground (except for service conductors)

 

[u2slow]

Both connectors will ground the armour/jacket. IMHO, the set-screw connector does a better job. Use the red anti-short bushings regardless.

The bare copper EGC/bond wire in the AC cable gets terminated/pigtailed in the box as usual.

EDIT:

Disregard. I've worked many years with newer, Canadian AC cable... but missed the critical detail:

I've got some existing steel AC cable (14-2 with bonding strip)...

 

[Deker]

Thank you both for your help.

 

[alfredeneuman]

The bare copper EGC/bond wire in the AC cable gets terminated/pigtailed in the box as usual.

There's not a bare copper ground wire in AC cable.
It's a thin aluminum strip "in intimate contact with the armor" and may be snipped off at the connector.

 

[nadogail]

Thanks for sharing.