I inherited a small industrial a couple years ago and am still learning their system. I would like to know what this yellow box is. The CT metering is in a small substation ahead of this point so that eliminates a CT cabinet. There are no apparent openings other than for the cables entering and leaving. The service is 480/277 Wye. I believe this is part of the original serivce to the building built 50+ years ago. The serving utility and the industrial disagree on who owns the 3- 500kva transformers in the sub outside. Neither claim ownership. They do agree that any work from the load side of the transformers on in, is the industrials responsibility which trickles down to me.
No tags, no handles. I am leaning towards the power factor correction capacitor but until we shut down the sub later this winter I won't be getting close enough to open or exam closer. If it is a capacitor bank they must not be working because we had to add 100KVAR last year. Plant power factor went from 70s to 98. Thought the manager was going to kiss me.