[RE-wrenches] Best practices for conduit penetration on roof

[William]

And if over 250VDC, bonded. 

William


On Nov 25, 2012, at 1:58 PM, Bob-O Schultze <bob-o at electronconnection.com> wrote:

> Don't forget that EMT carrying DC within a building has to be marked every 10'.
> Bob-O
> 
>