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The location is in New York, midway on the boarder with PA. The maps I see showing lightning strikes indicates this is a low incidence area, but it only takes one accurate strike. No controls on the condenser; those will be in the MCC, below; only power wiring above the roof level...

We are locating new refrigeration equipment on the roof of an existing manufacturing building. The building does not presently have a lightning protection system. The owner has questioned that since the new refrigeration equipment is the highest point, does this need special grounding for...

I am looking for suggestions for what cable to use for some overhead wiring for parking area lighting. The application is for 120 volt and 277 volt, 20 amp lighting circuits, strung from wood pole to wood pole, approximately 100' to 150' apart. Figuring voltage drop, the cables will be #10 or...

I checked that site. Amazing! I have searched the web before and never locked on to that site. The prices are outrageous, but if st/st is necessary, then we have no choice. Thanks.

I am looking for input on the use of stainless steel tubing as an electrical raceway (low voltage control, 120 volt, 480 volt circuits). I am doing work in dairy processing facilities and the clients have asked that stainless steel be specified in lieu of PVC coated GRS. We are familiar with...

Can someone provide me with the source or requirement for HID rated circuit breakers and what the HID rating means?