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Old 07-24-2019, 10:07 AM   #16
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Re: Electric Water Heater Whip Question


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Originally Posted by RustyRealtor View Post
OK, I'll install the disconnect, not the switch. But only because I'm afraid the inspector might not like it.

It's nice to be able to turn off a water heater without pulling a disconnect. I turn mine off when I leave the house in the morning and turn it back on when I return in the evening. I tell myself I'm saving energy, but I'm probably not saving much. If I turn the heater off and go out of town for a week, when I return home the water in the tank is still warm. I suppose I could install a switch and a disconnect.

This is something I read on Amazon when I ordered the switch:

Question:
Can this switch be used to turn an electric water heater on and off?

Answer:
Yes. We install them by the hundreds specifically on water heaters. K.J. (master electrician)

Thanks for all of your replies,
Russell
I used this one: https://www.amazon.com/dp/B002YEN8YK..._PphoDb0MQ02B4
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Old 07-24-2019, 05:56 PM   #17
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Re: Electric Water Heater Whip Question


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Originally Posted by Wiredindallas View Post
The 30 amp switch is good. Do not use a lower amp switch because it cannot handle the load even if #10 wire would fit.
Another way I have done before is to put in a wall receptacle and put a pigtail cord on the water heater. Of course a 30 amp.
Water heaters do not meet the code requirements that allow cord connection.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 07-24-2019, 06:00 PM   #18
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Re: Electric Water Heater Whip Question


Quote:
Originally Posted by RustyRealtor View Post
It's nice to be able to turn off a water heater without pulling a disconnect. I turn mine off when I leave the house in the morning and turn it back on when I return in the evening. I tell myself I'm saving energy, but I'm probably not saving much. If I turn the heater off and go out of town for a week, when I return home the water in the tank is still warm. I suppose I could install a switch and a disconnect.
Save yourself the effort all to save 10 cents over the course of the year. Leave the disconnect in the on position unless worked on.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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