Help, Hot Water Heater Timer Install? - DoItYourself ...
Jul 29, 2001· I just bought the Intermatic "Little Gray Box" 40amp Hot Water Heater Timer Switch, for use with my 240 VAC hot water heater. I'm having problems installing it because the last time I tried, I got a "POW!" and a bright flash when I flipped on the circuit breaker. The box has 6 terminals, labeled: "Ground" "A" Neutral "1" Line "2" Load "3" Line ...