I need a wiring diagram or instructions for GE water heater Cat no. DG52-2A 3, Serial no. WH(NNN) NNN-NNNN It looks very old (no date on label) but still works. It has external elements (wrap around tank) and thermostats of a type I've never seen before. It was wired with two 12 ga romex wires, one to each element. My question is, was it wired with two 120 volt circuits or were they both 240 volt? The main power panel of the house has been replaced and I need to hook it up to the new panel. The label says: ratings each circuit volts AC 125 amps 30 / volts AC 250 amps 25. Top element is 1500 watts, bottom element is 1000 watts. What gives? Thanks for any help you can give me.
Hello have you gotten an answer yet.
How along was the Panel changed out.
Are the 2 wires in the new panel
not yet, I don't know how I should hook them up
Are the black and the white wire the same length coming out of the sheathing?
on one, but not the other (I thought of that, but the old boxes were a chaotic jumble and I didn't want to count on that kind of evidence)
Each circuit is 120v. Top element is 1000w. Bottom element is 1500w Voltage divided into wattage gives you current. Doing the math each circuit would pull less than 20 amps.
The problem is that these 12 ga wires came out of two different sub-boxes so I didn't realize they were together at the other end. I thought they were 120 volts circuits and didn't record exactlt how they were wired.
Have you ever heard of such an arrangment?
No it is against code to have 2 wires from different panels coming to the the same device, but you said that the name plate on the hot Water Heater says it can use 125v. this is the same as a 120v circuit.
Are you sure you are reading the nameplate correctly.
I'm going to have to try wiring it that way and see if the water gets hot.
Yes, it's very legible
would it say 30 amps at 125 and 25 amps at 250?
Doing the math, as you say, I get a 12.5 amps on one element and 8-1/3 on the other.
The label doesn't make sense to me yet
I was about to tell you that you can't hurt anything by connecting 120v to both elements. either it will heat or it won't. but I would not advise sending 220v because that could burn element out. be sure that it is full of water and bleed the closet faucet to the hot water heater in case air is in tank. If not and the element is not submerged it will burn out. yes you are right the label does not make sense if it is 30 amps at 125v then it should have said 15 amps at 250 v
The only thing that I can think is if you supplied both elements with 1 circuit you would have to supply 2500w. this would not work on a 20 am circuit,
The elements are external, not as likely to burn out because of empty tank. I was planning to take this approach if I couldn't get definitive information but was hoping someone would know for sure. I'd feel better if I understood the label
Do you think maybe there was an option to wire the elements in series at 240 volts?
I understand and as I have said the label does not make sense. I am just useing years of experience now. I know it does not make sense to send 220 v per line to the water heater. That would mean that it would only pull 7 amps or so on and even less on the other circuit. Which means you would have been able to use a 15 amp breaker. Remember you can only load a circuit up to 80% with mean a 20 amp breaker should only be loaded to 16 amps and a 15 amp breaker to 12 amps. Yes I do believe as I stated earlier that I believe there was a way to wire both together and if so it would not work on a 20 amp breaker or a 25 amp unless it utilized 220v
Well, I'm going to go try it -- 120 volts each, that is. Thanks for the imput.
I do believe there was a way to wire them both and if so it would have to have utilized a 220v circuit a 120v with 20 or 25 amps would not work.
I understand that
I'm going to use two 20A breakers and wire the two elements individually
Your welcome please leave feed back and press button to accept. email me at firstname.lastname@example.org . Yea exactly wait about 20 minutes and run water. It will take about that long since it is 120v vs 220 being delivered
single 20's. White wire goes to neutral bar.
Master Electrician with over 26 years experience