My PW has a non-backed up panel, which until recently only had a single breaker on it - a dual-pole EV charger. To true-up the usage, Tesla installed CTs on each phase in my main panel and all the reporting was correct...
Recently I had some work done involving a lot of drywall removal near my panel and I took the opportunity for my contractor to run conduit and cable for a future subpanel at the other side of the house. My intention would be to run another EV charger off this and any other additional loads. The contractor run the sub-panel conductors through the existing CTs in the main panel (noting the correct phases).
I don't have the subpanel breaker on but my main panel loads are now under-reporting by close to 50%. Is this a case of one CT losing its connection? Being knocked offline? Or is something going on with the CTs having some 4 AWG wire inside them, even if it's unenergized?
Recently I had some work done involving a lot of drywall removal near my panel and I took the opportunity for my contractor to run conduit and cable for a future subpanel at the other side of the house. My intention would be to run another EV charger off this and any other additional loads. The contractor run the sub-panel conductors through the existing CTs in the main panel (noting the correct phases).
I don't have the subpanel breaker on but my main panel loads are now under-reporting by close to 50%. Is this a case of one CT losing its connection? Being knocked offline? Or is something going on with the CTs having some 4 AWG wire inside them, even if it's unenergized?