Wonder if all three transformers were wired wrong, and in the same way.
TwoBlocked Senior Member Location Bradford County, PA Occupation Industrial Electrician Jun 19, 2023 #21 Wonder if all three transformers were wired wrong, and in the same way.
ATSman ATSman Location San Francisco Bay Area Occupation Electrical Engineer/ Electrical Testing & Controls Jun 19, 2023 #22 TwoBlocked said: Wonder if all three transformers were wired wrong, and in the same way. Click to expand... The OP stated (5) xformers not (3). Highly unlikely that wrong wiring is the cause. I suspect it to be some kind of device such as a TVSS (SPD) mounted inside of each Xformer and may not be easy to find especially if they are oil filled
TwoBlocked said: Wonder if all three transformers were wired wrong, and in the same way. Click to expand... The OP stated (5) xformers not (3). Highly unlikely that wrong wiring is the cause. I suspect it to be some kind of device such as a TVSS (SPD) mounted inside of each Xformer and may not be easy to find especially if they are oil filled