Question about Hardware & Accessories
But...it Depends on amp rating of timer, wattage of water heater, and line voltage.
Look at label on side of heater for watts.
Electric water heater will work on any voltage.
1) Start with 120 Volt outlet::
Volts x amps = watts
Watts divided by volts = amps
Let's say outlet is 120Volts. Lets say water heater is rated 4500 watts.
4500 divided by 120 = 37 amps
There is NO plug-in timer rated for 37 amps.
Let's say water heater is rated 900 watts.
900 divided by 120 volts = 7.5 amps
Yes. The Intermatic HB113 timer will handle up to 8 amps.
2) 240 Volt outlet
Same calculations as above.
1900 watt element divided by 240 volts = 8 amp.
Yes, the Intermatic HB112 timer will safely handle that element.
3) Here are some water heater timers:
4) Here are some off-peak water heater ideas.
Posted on Nov 01, 2012
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Posted on Jan 02, 2017
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