LarryC, Contactor feeds a 200 amp lighting panel that feeds all the parking lot lights, pole sign and building exterior neon. This is a car dealership, so quite a bit if lighting. In December of 05, I megged all branch circuits out of this panel and found nothing wrong. I replaced the feeders to this panel at that time also. The only transformers are the pole mounetd utilitys.
I also thought somthing had to be different at night that I wasn't seeing during the day. I have spent hours checking during the night and can find nothing different. I agree it is a facility rather than contactor problem. I will take pics today and post them after work. Maybe you guys will see somthing that I dont.
Thanks, Richard
