RMC vs GRC

[K2X]

The other apprentice and i were discussing Rigid Metal Conduit and Galvanized Rigid Conduit and decided we havn't seen enough of either to know the difference. We think we are more likly to see GRC on a job but arn't sure?? Thanks for all the help.

 

[ron]

I believe they are the same

 

[roger]

I believe they are the same

Yes they are.

Roger

 

[shepelec]

Maybe you mean IMC and GRC?

 

[don_resqcapt19]

RMC is a generic term and GRC is a specific term. You can get steel, stainless steel and aluminum RMC. The term GRC applies to the most commonly used type.

 

[Smart $]

The term GRC applies to the most commonly used type.

Typically it is the steel type that is galvanized (the G in GRC).

Aluminum, stainless, PVC-coated steel (e.g. Robroy) are not galvanized, and thus not GRC.

 

[don_resqcapt19]

Typically it is the steel type that is galvanized (the G in GRC).

Aluminum, stainless, PVC-coated steel (e.g. Robroy) are not galvanized, and thus not GRC.

The PVC coated that I use starts out as GRC and then is coated inside and out. It is Plasti-Bond, by Robroy.

 

[Smart $]

The PVC coated that I use starts out as GRC and then is coated inside and out. It is Plasti-Bond, by Robroy.

True. The Robroy umbrella also includes PVC-coated manufactured/marketed under Perma-Cote and KorKap brands.

Yet the point was that PVC-coated is typically not called "simply" GRC, and my oversight in stating it was not galvanized.