OK... now onto a new comment.

master66, is this WWTP an aerobic plant or an anaerobic plant? The reason I'm asking is that you mentioned the presence of "several man holes" on the site.

Typically at a plant of the anaerobic design, many of the below grade spaces will be classified. You should thoroughly review NFPA 820, Fire Protection in Wastewater Treatment and Collection Facilities for all of the wiring requirements in the facility.

Now granted I hope the electrical engineer reviewed this standard, but, it has been my experience that they usually don't even know about it. [Linked Image]

Just something to consider. If you have any questions, about 820, feel free to post and I'll see if I can answer them.

[This message has been edited by safetygem (edited 03-23-2005).]