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-   -   Microwave oven trips breaker (http://www.diychatroom.com/f18/microwave-oven-trips-breaker-126563/)

Jimbo65 12-13-2011 09:47 PM

Microwave oven trips breaker
 
Have an 1100W microwave hood mounted over my range. The outlet which is mounted in the cabinet above the microwave is wired into the circuit in the adjacent tv room. When the microwave is used on high for over a few minutes, it trips the breaker if the 50" plasma tv is on. I realize the microwave should be on its own circuit. I have a 200 amp service and plenty of space in my breaker box. What is involved with fixing this situation? It's really a PITA. I know installing a larger breaker is probably unsafe but I am tempted sometimes.

ben's plumbing 12-13-2011 10:07 PM

that microwave should be all by it self on its own breaker....if that is to hard to do ..run a new circuit for... the t.v should be eaiser... DON'T INSTALL A BIGGER BREAKER THIS WOULD BE DANGEROUS>>>& OUT OF CODE>>>>THERES ONLY ONE WAY THE RIGHT WAY...

Snav 12-13-2011 10:12 PM

Quote:

Originally Posted by Jimbo65 (Post 793452)
Have an 1100W microwave hood mounted over my range. The outlet which is mounted in the cabinet above the microwave is wired into the circuit in the adjacent tv room. When the microwave is used on high for over a few minutes, it trips the breaker if the 50" plasma tv is on. I realize the microwave should be on its own circuit. I have a 200 amp service and plenty of space in my breaker box. What is involved with fixing this situation? It's really a PITA. I know installing a larger breaker is probably unsafe but I am tempted sometimes.

I'm puzzled as to why it's on the Livingroom circuit - sounds like someone remodeled with ignorance and got lazy.

I would just wire it into the kitchen schematic like it should be.

Jimbo65 12-13-2011 10:26 PM

I agree with you. One thing for sure. The people I bought the house from (original owners) were far from lazy and did everything else with great care and attention to detail. They even left me receipts and care instructions for the trees they planted. If someone got lazy it was whoever they hired to install the over the range microwave and exhaust hood. They didn't have a plasma tv so they wouldn't have noticed the issue. If I had an LCD tv I wouldn't have noticed it either. Anyway, what is involved with changing the outlet to the kitchen schematic? I'm almost certain the installer just tapped into the outlet the tv is plugged into which is conveniently just below the outlet installed for the microwave and probably even in the same stud bay. Lazy for sure

Jimbo65 12-13-2011 10:28 PM

Quote:

Originally Posted by ben's plumbing
that microwave should be all by it self on its own breaker....if that is to hard to do ..run a new circuit for... the t.v should be eaiser... DON'T INSTALL A BIGGER BREAKER THIS WOULD BE DANGEROUS>>>& OUT OF CODE>>>>THERES ONLY ONE WAY THE RIGHT WAY...

I would never install a bigger breaker. I was really kidding about that.

ben's plumbing 12-13-2011 10:29 PM

thanks ...but you just never know...

Billy_Bob 12-13-2011 10:35 PM

To fix this, you need to run a new wire from the breaker panel to the microwave. Then connect to its own breaker.

And that can be easy or a royal pain depending on the location of that outlet and the construction of your home.

And electricians have a lot of tricks for running wiring. What may seem impossible to a homeowner might seem easy for an electrician with the right tools.

Snav 12-13-2011 10:46 PM

Why does a microwave have to be on a separate circuit?

Jimbo65 12-13-2011 10:51 PM

Quote:

Originally Posted by Billy_Bob
To fix this, you need to run a new wire from the breaker panel to the microwave. Then connect to its own breaker.

And that can be easy or a royal pain depending on the location of that outlet and the construction of your home.

And electricians have a lot of tricks for running wiring. What may seem impossible to a homeowner might seem easy for an electrician with the right tools.

I will pull the outlet on the opposite wall tomorrow to confirm my suspicion that the installer tapped into the family room outlet to wire the microwave outlet. I'm 99% sure that's what I'll find. What about the previous suggestion of tapping into the kitchen schematic? The range is in its own circuit. The only other load in teheran kitchen to worry about would be the refrigerator. There is an outlet to the right of the range. How many amps is a 27 cu ft fridge going to draw? When the breaker trips the only thing in the kitchen that loses power is the microwave. If I tap the kitchen outlet shouldn't u be ok? I know it isn't the optimal solution. I don't have the money to pay an electrician right now. What do you think?

Jimbo65 12-13-2011 10:54 PM

Quote:

Originally Posted by Snav
Why does a microwave have to be on a separate circuit?

That is a good question. It isn't the first time I have heard it though. I don't see why it would. Seems to me the only things in my house needing their own circuit are the range,hot water heater,dryer, and the HVAC equipment.

Billy_Bob 12-13-2011 11:10 PM

Quote:

Originally Posted by Snav (Post 793509)
Why does a microwave have to be on a separate circuit?

Because if you don't place things like this on separate circuits, then the TV goes off when you are microwaving the hotdogs for the game on the TV!

Jimbo65 12-13-2011 11:18 PM

Quote:

Originally Posted by Billy_Bob

Because if you don't place things like this on separate circuits, then the TV goes off when you are microwaving the hotdogs for the game on the TV!

I can get away with a hot dog easy. If I try to dry the cat in the microwave after a bath the breaker trips every time though.

mpoulton 12-14-2011 03:39 AM

Quote:

Originally Posted by Snav (Post 793509)
Why does a microwave have to be on a separate circuit?

Because when it isn't, people end up with problems like this...

Microwaves draw a huge amount of power - often 12A or so. If you put the room lights and a few other receptacles on the same circuit, people start posting questions to DIY boards wondering how to make the breaker stop tripping!

dmxtothemax 12-14-2011 04:53 AM

Dont forget there is also 50 inch plasma on the same circuit too !
I will bet it uses a bit of power too !
Microwave plus plasma too much !
How many watts does the plasma pull ?

oh'mike 12-14-2011 08:53 AM

Older houses had little exhaust fans above the stove---it was allowed to tap any convenient circuit in those days.

Todays code calls for a dedicated 20 amp circuit (electricians--correct me if I'm wrong) Because the new microwave/fan/light combinations draw a lot of juice.


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