Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx> Hi David,OK, I think I'm figuring this out. On a Y distribution, each leg of the Y is 7200V and the voltage between any two of the legs is the 12470V. The center node of the Y is grounded. You could hook this pig between any one of the legs and ground (for 7200 V across the HV bushings) and get either 120V or 240V on the LV side depending on how the two LV windings are interconnected. Do they ever hook the two HV bushings on the pig between two of the Y three phase legs and drive it with 12470??? Seems like you could have the two LV windings in parallel and still get close to 240V and have each winding share in the 240 volt current.
Gerry R.
Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx> Justin, The "Y" refers to a wyed cross phase hookup in a three phase configuration. 12,470 is the sq. rt. of 3 x 7200 volts. In single phase configuration, the 7200 volt rating is all that you will be getting and 7200 is a little on the low side for a 15 kVA SG driven Tes- la system, but hey, if it's free, then go for it. David Rieben