I have added the wire to the timer for connecting to the SWG
Green: I'm guessing this is groud
White: When I touch this and the green wire I get 120 volts
Black: When I touch this and the green wire I get 120 volts
When I touch the White and Black with a voltmeter I get zero. Does this mean when I connect it to the SWG this configuration is a 240v or 120v?