I got asked this and I have not a clue or a dual trace meter at my disposal at present. On a home power feed. One common and hot two 110 or 120 vac feeds are the hot leads 180deg. out of phase or the same? If it's provider specific- Com Ed, Chicago.
Thanks, I know odd question but why this is needed is beyond me, I just figured one of you will know 12 volts is where I quit.
Fraser Competition Engines Chicago, IL.