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Old 03-13-2013, 08:02 PM   #1
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Default Heating Element / Controller Question

Quick question.

I am looking at heating elements/controllers that will plug into my stove outlet.

Looking at my stove outlet, I have a four prong socket (the stove plug only has three prongs). The socket is printed with '250v 50A'. When I look in the circuit/breaker box in the house the circuit breaker for the stove is marked 40A.

The controller and 4500W element I am looking at have the following requirements:

220V 30A service. Includes a 6 ft power cord with either a 3-wire plug (NEMA 10-30P) or a 4-wire plug (NEMA 14-30P).

Is this going to be OK for my stove outlet?

Thanks in advance.


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Old 03-13-2013, 08:52 PM   #2
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The short answer is no, because the 40a breaker is oversized for the 10 gauge wire. You would need a 30a breaker so that it would trip if the 10 gauge wire overheated.

You should also think about GFCI protection.


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Old 03-13-2013, 08:58 PM   #3
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Among your alternatives:
1) Replace with a 30a breaker, although that may not be sufficient for your stove.
2) Find/build a controller that uses wire (8 gauge) and fixtures rated for 40a or more (readily available outlets and receptacles will be rated for 50a).

I'm assuming your current receptacle is NEMA 14-50?
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Old 03-13-2013, 10:01 PM   #4
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Ummmm.... pass!

Here is a picture of the stove outlet:



Here is a picture of the dryer outlet:



Here is a picture of the two breakers (dryer on left, stove on right).



I am a renter so can't install or change anything.

Am I out of options?
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Old 03-13-2013, 10:40 PM   #5
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That is a 3-wire outlet. Should be Hot1, Hot2, and Gnd.
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Old 03-13-2013, 10:53 PM   #6
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OK, so what does that mean in terms of my ability to come up with an electric brewing rig?

My apologies if it's obvious - I am not electrically inclined (or skilled)!
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Old 03-13-2013, 11:00 PM   #7
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Quote:
Originally Posted by NWMushroom View Post
OK, so what does that mean in terms of my ability to come up with an electric brewing rig?

My apologies if it's obvious - I am not electrically inclined (or skilled)!
You have the power source. All is ok.

Now all you need to do is define what you want for your set up. Tell us what controls you want in place and how you want to run your rig.

I can help with the right info.

P-J
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Old 03-13-2013, 11:06 PM   #8
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Originally I was looking at just getting something 'off the shelf' due to my lack of electrical expertise.

Something like this: http://www.highgravitybrew.com/produ...stem-p3987.htm

But from this thread, I understand that this won't be possible with my power source?

Thanks!
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Old 03-13-2013, 11:13 PM   #9
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Youre only gonna be drawing around 20 amps so youre fine with the breaker. Oversizing is fine, not undersizing.
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Old 03-14-2013, 04:01 AM   #10
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Quote:
Originally Posted by jeffmeh View Post
The short answer is no, because the 40a breaker is oversized for the 10 gauge wire. You would need a 30a breaker so that it would trip if the 10 gauge wire overheated.

You should also think about GFCI protection.
Quote:
Originally Posted by mikeysab View Post
Youre only gonna be drawing around 20 amps so youre fine with the breaker. Oversizing is fine, not undersizing.
So 1 says yay, 1 says nay!

Help!!


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