Thanks to everyone that replied....I appreciate it. I will try to put together a diagram and get exact wire dimensions and voltage and amperage readings, when I come back to work Sunday night. Hopefully we can figure this out at that time. Thanks again.
The voltages are identical......they are both coming from the same emergency buss. I do not have any way to get a diagram uploaded. Secure facility doesn't allow uploads.
While performing maintenance on a UPS we run our gens and do a wrap around feed to a distribution board. The power going through the bypass breaker and the power for the wrap around is coming from the same Emergency buss. When 1 of the 2 paralleled feeds is energized, current readings are...
Thanks for all the reply's. I need to clarify that 1 feed is coming from the UPS in bypass mode which is at the time of this anomaly being fed by an emergency generator and the alternate feed is paralleled and being fed by the same Emergency Generator Dist. Board.
No it was not charging the...
I have a power panel that is fed by 208 3 phase coming from a UPS and a second or alternate power feed from the city utility line, they are synced and within a fraction of a volt of each other. Does anyone know why if the load is measured with a clamp on meter, why when the feeds are sharing the...
