If you require the entire panel to be 120/240V 1PH 3W, you need to use a standard transformer, not a buck-boost one. 150A x 240V = 36kVA, so you would chose the next standard size of 37.5kVA. Yes, your primary OCPD should be evaluated considering the inrush characteristics of the transformer.I have a 150amp 120/208Y single phase panel that I need to boost to 230V.
What size transformer(s) would be required to accomplish this? Would it be necessary to reduce the primary fusing and provide 150A fuses on the secondary? The panel is MLO.
Thank you.
That's an excellent idea. Thank you.If all the loads are OK with line power at 120/208 and with generator power at 120/240, as appears to be the case, then I would simply fit a very small transformer to the ATS.
Wire this such that when 208 volts is present from the utility, the ATS "thinks" that 240 volts is present and transfers back to line power.
I would use a small isolating transformer of the type fitted in panels.
208 volt primary and a 240 volt secondary. You may need to ground the center tap of the 240 volt secondary in order that is simulates a residential type 120/240 volt service with grounded neutral.
It's a Kohler. It doesn't like the 208, and it doesn't seem to be adjustableThe pickup voltage on the transferswitch should be adjustable, so that problem can easily be fixed, if its on of the small Generacs the transferswitch is controled by the generator, and I have not had any issues with the single phase units not liking 208