- Placerville, CA, USA
- Retired PV System Designer
It is almost certainly a high leg delta. All of the measured voltages match.Now im just confused because the colors just dont match up...:? I know that the voltages I measured with our electrician are correct but the wires and colors just arent matching up... This building has 3 main disconnects on the inside. 2 1950's square D 600A and 400A single phase discos and this 400A 3 phase disco all going out into the bundle of wires shown into the pictures.
Can anyone make any sense of this?
You do not see that when looking at the delta fused disconnect only because it does not feed any 120V loads.
You should have a total of four wires coming down your service mast, three hots and a neutral. The neutral in the three phase disconnect is probably there just to provide the EGC connection.