What is the point of Redheads?

[WastefulMiser]

MC connectors already have the bushing in it.

By the by, hello.

 

[iwire]

MC connectors already have the bushing in it.

By the by, hello.

Redheads are not required to be used on MC by the NEC.

I use them anyway as I don't find the MC connectors we use to protect the conductor as much as I like.

 

[Jim W in Tampa]

Can you afford a short ? I see it as double protection and always use.

 

[WastefulMiser]

Redheads are not required to be used on MC by the NEC.

I use them anyway as I don't find the MC connectors we use to protect the conductor as much as I like.

Really? Inspectors are such terrorists.

I don't know about you, but I trust my work enough to sleep peacefully at night.

 

[WastefulMiser]

Can you afford a short ? I see it as double protection and always use.

They are worthless.

 

[JJWalecka]

WastefulMiser,

Welcome to the Forum!
I almost always use a Red Head. If I don't, I wrap some tape around the conductors and pull the Metal Clad sheath over the taped part and tape over the sheath to hold it. I know it is not required but I don?t see how the connector alone would be better than an Antishort. Just my 0.02.

Does any one use an Antishort for Greenfield?

Justin J. Walecka

 

[iwire]

I don't know about you, but I trust my work enough to sleep peacefully at night.

Thats great, some people sleep well no matter what.

It really depends on the connector.

If you are really using MC connectors with plastic bushings already installed than I doubt you will have anything to worry about.

On the other hand if you use the connectors I get or boxes with built in MC clamps than in my opinion the redheads are cheap insurance.

If you feel they are worthless than don't use them.

 

[iwire]

and tape over the sheath to hold it.

Go easy on taping the sheath, the connector has to grab onto bare armor to provide the bonding of the armor.

 

[JJWalecka]

Iwire,

"If you are really using MC connectors with plastic bushings already installed than I doubt you will have anything to worry about.
On the other hand if you use the connectors I get or boxes with built in MC clamps than in my opinion the redheads are cheap insurance"

The connectors with bushing that I know of, is the style that has one screw that when tightened compresses the cable while simultaneously spreads into the hole it is inserted into. It has a bushing that is where the conductors exit the connector. There is no protection where the cable was cut.
I always thought the Antishort was used to protect the conductors from the part of the sheath that has been cut.

Please correct me if I am wrong.

Justin J. Walecka

 

[JJWalecka]

Iwire,

"Go easy on taping the sheath, the connector has to grab onto bare armor to provide the bonding of the armor."

I try not to use too much. I never thought of it like that. Come to think about it, it was pretty stupid. Thank you my friend.

Justin J. Walecka

 

[infinity]

Go easy on taping the sheath, the connector has to grab onto bare armor to provide the bonding of the armor.

This is something that I've seen lately. Guys folding the clear sheath back over the metal jacket and then installing the connector. Although the MC cable is not an EGC it still is required to be grounded.

 

[iwire]

Here is NEMA info about MC and redheads.

NEMA Bullentin 90

 

[iwire]

Although the MC cable is not an EGC it still is required to be grounded.

I agree, that is why I tell our guys not to tape the sheath.

 

[celtic]

Go easy on taping the sheath, the connector has to grab onto bare armor to provide the bonding of the armor.

I thought the jacket on MC was not a suitable EGC unless listed as such?

 

[iwire]

I thought the jacket on MC was not a suitable EGC unless listed as such?

Correct.

But even though it not an EGC it must be bonded as any metallic electrical enclosure or raceway must be.

 

[tom baker]

Does any one use an Antishort for Greenfield?
Yes if the connector clamps on the exterior of fhe flex. There is a small hole in the connector shell to verify that the anti short bushing has been installed.

 

[WastefulMiser]

What's an "Antishort for Greenfield"?

The MC connector I refer to is the snap-on type with three prongs inside. Are there different [better?] ones out there?

Romex connectors, eh?

 

[JJWalecka]

Tom Baker,


The largest antishort I have seen was for 1 1/4 greenfield. Do they make an antishort for three or four inch Greenfield?


Justin J. Walecka

 

[Bill W]

The anti-short bushing is crucial to a safe mc installation. IWIRE says,
"Redheads are not required to be used on MC by the NEC."
Those redheads come with the mc and are covered by the code insofar as following the manufacturers instructions.

 

[don_resqcapt19]

This is just one more problem that would go away if every place would adopt the Chicago code.
Don