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Old 09-13-2009, 04:14 PM   #16
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Need a relay for off peak heat


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Originally Posted by BorisMD View Post
Okay.

I'm just switching the thermostat, so no large current load. The thermostat will be inactive during the daytime so there will be no activity at the boiler or pumps. Basically, this just interrupts the current flow to the thermostat.

Boris
And what does the thermostat control? Is it line voltage or low voltage? There has to be some sort of large contactor somewhere, to control a 50 amp load. If that contactor is within the heater unit, then you should be good to go.
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Old 09-13-2009, 05:25 PM   #17
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Need a relay for off peak heat


Low voltage thermostat.

I ordered the ice cube relay and socket online. I also spoke with an electrical contractor acquaintance of mine, and he concurred with what has been said so far.

Xcel energy wants me to use a normally closed relay to prevent customers from using their switched line directly, thus providing a break between their service and my circuit.

Only hassle now is that my meter socket box only has 1 1/2" as the smallest knock out, so I'll have to drill a smaller opening to use to run the 1/2" conduit from the meter socket to the junction box.

Regards,

Boris
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