I am in a manufacturing facility that is about 12 yrs old, and in a nasty environment. Some of our rigid conduit and metallic condulets are beginning to erode or rot. There have been instances of water getting into the condulets and/or j-boxes causing grounded circuits. We are planning replacement of the conduit, boxes, etc.
Our plant engineer (EE I might add) said "drill holes in the low points of the condulets or boxes to allow water to drain. That is OK by NEC standards."
I disagree, but I am in a bad position. Is it, or is it not legal to "drill holes" in boxes or condulet for such purpose. Could you site the correct article in the NEC to solve this issue for us.
Thank You
Our plant engineer (EE I might add) said "drill holes in the low points of the condulets or boxes to allow water to drain. That is OK by NEC standards."
I disagree, but I am in a bad position. Is it, or is it not legal to "drill holes" in boxes or condulet for such purpose. Could you site the correct article in the NEC to solve this issue for us.
Thank You