rcwilson
Senior Member
- Location
- Redmond, WA
My designer reviewing our company's installation specifications asked me why we spec an anti-corrosion wrapping on RGS conduits in a concrete duct bank. I assumed it is to limit corrosion of the galvanized conduit in the concrete per NEC 344.10 (B). But I recall seeing many old embedded RGS conduits without a tape coating that were not rusted out.
In your opinion, does the galvanized coating on the conduit meet the code requirement for corrosion protection by itself? And what is your typical practice for RMC embedded in concrete: to embed as is or to provide some type of additional coating?
Thanks for the input.
Bob W.
In your opinion, does the galvanized coating on the conduit meet the code requirement for corrosion protection by itself? And what is your typical practice for RMC embedded in concrete: to embed as is or to provide some type of additional coating?
Thanks for the input.
Bob W.