I presently employ an X-10 Appliance Module and their 113A Mini Timer to control a 50AMP relay's 120VAC coil that switches power to our water heater.? Basically the water heater is only powered twice daily for fifteen minutes each.
Of course, we can switch the circuit on from a variety of X-10 control devices should we need more hot water for any reason.
I thought to look at latching relays thinking the ability to pulse the relay at each START time and again at each END time might prove move efficient sine we are not powering the relay coil save for the second or so it takes the PULSE to switch its state.? I found a video (o n YouTube) demonstrating how it might be controlled from several independent locations via momentary contact witches - "Impulse Relay (Latching Relay) Basic Function, Wiring and Application."
So, assuming I can find a similar relay rated to switch the power to a water heater, I need a way to automate sending it a PULSE four times daily.
I have mechanical timers that are able to turn the power on for several minutes - you know, the one's you plug a lamp into to give the impression you're at home when you're not -
but they are imprecise. I would prefer something digital if there is such a thing on the market.
Gooey