I have a pump circuit that has 2 sets of lightning arrestors and 2 sets of surge capacitors on it. Does anyone have any information on whether or not the 2 sets could limit the effectiveness or interfere with the proper operation of one or both sets?
Is anyone aware of a code or standard that says a motor overload relay must be hard wired to the coil of the starter. The only thing I can find in the NEC referencing the wiring allows the overload device to be wired to a supervised alarm when an imediate shutdown of the motor would create a...
We're remodeling our basement and I'm looking for information on how to size a beam so that we can get rid of some or all of the poles supporting the existing beam. Does anyone know of a software package or literature that could help?
Thanks,
Jeff
The information I'm looking for would be a chart of the temperature rise and long term effects on the motor insulation of a motor running with a voltage imbalance of .9 to 1.1 percent and current of about 5 percent. I have a customer that has had several motor failures in the past two years...
The information I'm looking for would be a chart of the temperature rise and long term effects on the motor insulation of a motor running with a voltage imbalance of .9 to 1.1 percent and current of about 5 percent. I have a customer that has had several motor failures in the past two years...
