My firm has been performing Arc Flash Hazard analysis for our customers. I have heard that new evaluations must be performed every two years and the Arc Flash labels will expire after that time. If this is true, could anyone tell me which code governs this and/or where I may find this...
I have looked in the NEC and cannot find any codes for paint booths (or something similar) for lighting and panels, as far as explosion proof, etc.
Can someone shed a light on this?
Thanks.
Ryan
I was wondering if there is a type of solder that is non-allergenic. I am using Rosin solder (lead free), but it makes me very sick afterwards. It also must be lead-free.
I am actually a EE, but I'm helping my co-worker who is a ME try to figure this out (I haven't had too much heat transer experience) ...
We have a 25,000 ft long pipe with an O.D. of 18" and I.D. of 16.875". The temperature of the water inside the pipe is 65 degrees F, and the ambient...
