John, thanks for the summary of Dale's work on the functioning of the PH relay controls. I missed that; at times I don't look at the board very often.
RJR, yes I did measure the 77-amps rather than calculate it, for the 135w PH. Altho it is the product of two measured voltages and one measured amps, so you need a clamp-on ammeter and a voltmeter. I'm against posting the procedure on this board because any mistake can generate dangerous voltages, but I'll write it up and PM it to you. --Frank