I have a concern that mcc used outdoors should have some type of condisation heaters used inside the mcc to prevent moisture build up.
Does anyone feel the same about this ? Does anyone know if this is a manditory design rule listed somewhere ?
Thanks for any replies.
It's a "JRaef Mandatory Design Rule", but it's not mandatory at far as the National Electric Code, other than the general clause that is often paraphrased as "equipment shall be suitable for the use..." In other words and inspector can, if he so choses, say that space heaters are required to be suitable for outdoor use, and if he says so, it is.
All that said, I don't know of anyone in their right mind that would not do it. Whatever you are putting inside of that MCC will have some wording in the instruction manual that says something to the effect of "keep the equipment clean, dry and free from condensation". That would mean space heaters. If you don't put them in, and something goes wrong that causes the mfr representative to go out there, if he sees that there are no space heaters, you are pretty much going to be left twisting in the wind.