This is happening to us? HVAC tech on a service call tells a customer there is an electrical issue with their condenser. We go out there and find that the breaker is tripping. So we check the disco, connections, wire, lugs, etc. Do amp and voltage test, replace the breaker for prosperity sack, and tell them to call the HVAC company back. Twice this week we have received calls back from the customer saying "no its an electrical issue." So then I have to call the HVAC tech and explain how a compressor works and how to use a meter. Both these techs have been from major companies....whats the deal?
At 8PM on the Wed. before Thanksgiving a customer calls for an emergency.
It's a funeral home and the elevator stopped working. They needed the elevator to move the bodies.
They said that the elevator guy just left and said there was something wrong with the power and they needed to call an electrician.
I go out and check the CB/disconnect. The bldg has a 240/120 3phase delta service.
Line and load sides check out OK. Control power OK.
I talk to the elevator guy on the phone, who tells me that he checked voltage to ground on all 3 phases and the voltage on the B phase was way too high.
I told him that he measured the correct voltage readings and explained the electrical characteristics of a high leg delta.
He tells me how long he has been working on elevators and says "no way, I've never seen or heard anything crazy like that"
Most elevator guys I run across are pretty sharp guys, this guy is the exception.