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New Water heaters and singing circuit boxes...

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posted on Nov, 7 2017 @ 11:12 AM
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a reply to: butcherguy

beats me,




Wire a hot water heater with wire that's sized to accommodate the heater's current requirement. For example, a 20-amp hot water heater needs 12-gauge wire, a 25-amp hot water heater requires 10-gauge wire, and a 30- to 40-amp hot water heater requires 8-gauge wire. Some large heaters draw up to 50 amps, requiring 6-gauge wire.
www.hunker.com...





A water heater of this type is required to be considered a continuous load meaning that the branch circuit needs to be calculated at 125% of the heater's rated ampacity. 4500/240 = 18.75 amps, will work on a 20 amp OCPD but, 18.75*125% = 23.4 amps, requires a 25 or 30 amp circuit
www.hunker.com...


we think it's a 12 guage wire, which would have gone with the 20amp breaker that was in in... but there's that 125% bit in there that made the 30 amp required....
the water heater itself is a 20 amp?




posted on Nov, 16 2017 @ 01:07 PM
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House heating is a serious issue and I think it's better to leave that to the professionals. In any case when heating system isn't working properly it's necessary to call for heating repairs immediately 'coz it can be extremely dangerous. At my house in Auckland I check the heating system with the help of the professionals from heating service here to ensure that my family is safe. Don't waste your time and consult with your local specialists.



posted on Nov, 16 2017 @ 01:24 PM
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a reply to: dawnstar

If you have a 30 amp breaker, the wire going from it to the appliance should be a minimum of 10 awg, to satisfy the requirements of the national electrical code, no matter what the appliance minimum ampacity is.



 
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