Is this electric water heater wiring correct?
I just did a search for John Woods thermostat wiring and found the John Wood website.

Then I used it, and your pictures to create the modified picture below.

It looks to me like you have it wired right. Also, it looks like the original wiring was done so that both the upper and lower heating elements would be on at the same time. With it wired the way you have it now, the upper element should go off when it reaches its set temperature, and simultaneously turn on the lower element.  I would check this with a voltmeter if I were you.

I AM NOT AN ELECTRICIAN: JUST A DO-IT-YOURSELFER OF ABOUT 50 YEARS. So, you might want to wait for a real electrician to respond.



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