What size breaker and wire do I need to use for a new installation (not new
oven) of a 5200W wall oven.
2 lines of text for electrical.
120/240 VAC. 60HZ. 5.2KW. 3 WIRE
120/208 VAC. 60HZ. 3.95KW. 3 WIRE
Current wires coming out of the oven are 3 at 12 AWG black, red, green, and a 16
AWG white. I am not sure if they are original to the oven or not.
I couldn't find the manual online. I acquired this oven used.
30a based on a 21.66a load (5200/240) but the real answer is in the
installation manual. My new GE oven calls for a 20. It may not have
the same power elements in it tho.
On Tue, 20 Sep 2016 16:14:01 +0000, Brent
Red and Black wires should go to each side of 240 VAC, White should go
to Neutral or Common, and Green should go to the metal frame. But you
need to verify how the wires are connected inside the oven, or you could
have a serious problem.
Your oven would draw 21.7 Amperes for 5200 Watts. A dual 25 Amp breaker
should be OK unless there is a 120 VAC outlet. In that case, I'd go for
a bigger breaker.
I'm not familiar with the codes that specify required wire size. 12 AWG
might be OK for 30 Amps, but I would prefer 10 AWG.
replying to Brent, Brent wrote:
I did just finally find an Amana document with my model number that adds 40amp
to the end of the electrical lines of text on model plate. So would that mean I
need a 40A breaker and 10 gauge wire?
In the manual it says:
"Line Voltage Requirements Line voltage must not exceed rated voltage. Line
voltage less than rated voltage will result in slow heating. Wiring system must
conform to U.L. Standards and National Electrical Code. Installation must
conform to all local, municipal and state building codes, and local utility
regulations. Oven must be connected only to a supplied circuit as specified on
rating plate. This oven requires 3 wires, 115/230-120/240 volts, 60 Hertz A.C.
Unit is equipped with a No. 10 ground wire in conduit. Oven should be fused
separately from other appliances. Verify electric power is off from fuse box to
junction box until oven is installed and ready to operate."
Maybe I need to open it up where the flex conduit enters the oven and see what
else I can find...
On Tuesday, September 20, 2016 at 3:14:06 PM UTC-4, Brent wrote:
We don't know because we can't see what you're reading, don't know
how you're interpreting it, don't know what exactly is on the eqpt
plate, in the manual, etc. But if it needs 40A, then you need 8g wire.
How you get to 40A, IDK, because all I see is 22A at 240V = 5200 watts
But a typical oven could by 40A.
replying to Brent, Brent wrote:
here are the from the spec sheet I was able to locate
120/240 VAC, 60 Hz, 5.2 Kw, 3-wire, 40 Amp
120/208 VAC, 60 Hz, 3.95 Kw, 3-wire, 40 Amp
Oven Wattage @ 240V
Broil, Insta-BroilTM 3,000
replying to Brent, Tony944 wrote:
As you stated your oven have two settings one is for bake and other to Broil.
I am sure you can use one or the other but "NOT" both at the same time!
At the broil rough estimate of current would be 13-14 Amps.
On the bake again rough estimate current will be 9-10 Amps.
This is base on 220 power source, number 12 wire would be sufficient enough.
Likewise the breaker 20-25 Amps ok. Two poles!!
Your white wire is for lights and possible outlet if it has one…
On Tuesday, September 20, 2016 at 6:14:06 PM UTC-4, Tony944 wrote:
Very odd then that it says 5200W at 240V. It would also be odd
for a new oven to use just 14 amps. They don't typically wire them up
with 40A circuits for nothing. It would take a very long time to
wait for your dinner. Do you like to wait?
I've never seen a 220V power source, only 240V. Maybe it exists somewhere
in the USA, but AFAIK, it's not common. Apparently Amana thinks so too,
they spec the oven at 240V.
On Tuesday, September 20, 2016 at 9:38:15 PM UTC-4, Diesel wrote:
What exactly is that ridiculous link supposed to prove? It starts off with:
"How come the U.S. is practically the only country in the world where household electricity is 110 volts instead of 220 volts?"
Obviously they are very confused because the common residential voltages
here are 120/240, not 110. Again, 110/220 may exist somewhere in the US
today, but I've never seen it. Have you? Where?
Years ago , around 1950 , many items were listed as operating on 110 or
220 volts. My dad repaired appliances during that era and often said
110 and 220. If I don't watch it,I will say the same thing even though
most household items are listed as 120 and 240 volts. At one time near
the middle 1950's items were rated for 115 volts. The 'standard' home
voltage seems to have gone from 110 to 115 to 120 volts over the last 70
The 208 voltage is from the way single phase power is taken from a 3
phase circuit. I am not sure what those voltages have done over the
years. I worked as an electrician for a large company and seldom worked
on anything that operated on 208 volts. Only had one or two electrical
panels with that and 120 volts in it. Everything else was 120/240 volt
rated for the office areas. Most of the work I did was with the 480
volt 3 phase circuits or the 277 volts you get off that for the lights.
At one time you had to specify if you wanted the 220/240 volt operation
or the 208 lower voltage. Probably depends on what area of the country
you are in.
The 208V figure comes from the voltage between two legs of the three
phase supply. Usually, the entire three phases are used for the three
phase applications or one of the legs to neutral (120V) is used for
single phase applications.
You can call it 110 or 120 interchangeably.
It hasn't actually varied in my lifetime, other than the normal day to day variation with load.
That's an RMS value, the peak is around 170.
Similarly when I worked in a factory the voltage was 440, 460, or 480, depending on who was talking, but it was all the same jolts.
On Thursday, September 22, 2016 at 3:33:27 PM UTC-4, TimR wrote:
People can call it whatever they want, but that isn't how the power
industry operates and it just adds to the confusion. AFAIK, they
have a voltage spec that they try to deliver and in all the places
I've been around the USA, that's 120V, not 110. Apparently Ammana,
the manufacturer of the oven in question agrees, because you'll see
that they spec it at 240V, not 220V. Which is why I asked where
anyone has seen 110V today as the norm in the USA?
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