25 amp breaker with 12 gauge wiring for water heater

Specific Inspection Topics Electrical Inspections
1

Yeah or nay? TIA

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2

Better picture

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3

Roy, aren’t you a retired electrician? What say you? :slight_smile:

4

I do not see size or type of wire …
Retired in 1997 dropped my licence then and have no code books.

5

Good points…I don’t know, Josh…sorry, buddy.

But, I bet it is very close to correct.

6

#12 is limited to 20 amps unless for a motor or compressor load, neither of which apply.

7

Thanks, Jim. :smiley:

8

Installation instructions for this unit call for 25 amp, #10 wire.

9

25 amp breakers are hard to find so a 30 amps will most likely be needed.

10

Minimum circuit size is:

4500/240=18.75*125%=23.4 amps

#12 is only good for 20 amps unless one of the load types that Jim mentioned.

#10 is the minimum conductor size and if the manufacturer’s instructions says to use a 25 amp OCPD then that is the maximum OCPD size. Typically these are fed with #10 conductors on a 30 amp circuit.