Vernmotor
Well-known member
Ok I got a 220 elec-heater came with a 40 amp breaker.I need to run wire about 50ft to this . what size wire should I run?
What size wire ?
- Thread starter Vernmotor
- Start date
malibu101
Well-known member
I see no problem with using 8AWG.
Anyone else agree or disagree?
Anyone else agree or disagree?
ixlr8
Well-known member
Do a search on the web. There are numerous calculators where you can plug in voltage, current, length of run, copper or aluminum and it will tell you the gauge wire you need to run.
How many KW?
WELL IF and thats a big if! I am reading this right..alot of paper work came with this thing..2 books and 3-4 pages of stuff.. the highest rate I see is 2085kw?? they list difference BTU rating..The way I take it. it has 3-4 coils in it and does not run them all the time..
I'm pretty sure your side of town doesn't consume that much power.
Why not post up a picture of the dataplate?
There should be a data plate on the unit, what does it say?
OK I will have to wait till tomorrow to look at the unit itself..it is in a box and not easy to get to right this min.. so I will post then..I will take a pic it..it is a Payne heater..it is 5 years old. looks like new ..Grandpa had it in his shop. and got a new one with A/C and a heat pump..so he sold this one to me..cheap. many thanks to all.
Not to far from ya, just down Route 13 in Nerk!
Falcon67
Well-known member
It came with a 40A breaker? That's kinda odd. 40A in electric heaters will be in the 7500W (watt) range. My 5000W heater requires #10 on a 30A 220V circuit. 220, 221, whatever it takes.
Charles (in GA)
Well-known member
The breaker needs to be at least 125% of the actual amp draw of the heater, watts divided by volts equals amps times one point two five gives you the minimum breaker amps required.
example.... 5000 / 230 = 21.739 amps x 1.25 = 27.17 amps or step up to a 30 amp breaker.
This is due to the fixed electric space heating equipment being considered a continuous load by the NEC (424.3(B))
In any event, NEC does not allow breakers over 60 amps nor heaters over 48 amps. If a heater draws more than this, it has to have separate elements powered by separate branch circuits.
Charles
example.... 5000 / 230 = 21.739 amps x 1.25 = 27.17 amps or step up to a 30 amp breaker.
This is due to the fixed electric space heating equipment being considered a continuous load by the NEC (424.3(B))
In any event, NEC does not allow breakers over 60 amps nor heaters over 48 amps. If a heater draws more than this, it has to have separate elements powered by separate branch circuits.
Charles
Ok some more info ..This is a payne PF1MNI-B036 it has a 1/3 hp motor and build in 40& 60 amp breakers. The wire that was ran to it has type U XHHW-CDRS on it..grandpa say it had two 220 wires ran to it..but he had a heat pump hooked up to with A/C I will not have a/c or heat pump.
That's the size I would use in copper.