Reply
 
Thread Tools Display Modes
Old 03-28-2016, 12:51 AM   #1
Senior Member
 
sgtlm17's Avatar
 
Join Date: Oct 2013
Location: New Jersey
Posts: 1,156
A/C and Microwave

Today I discovered my power center has one 20 amp breaker. Both my convection microwave and A/C are on this one circuit. Is this a problem. Is this because it is a convection microwave. I always thought these two items should have their own breaker. On the box it's labeled A/C. There is a 15 amp breaker at bottom that is labeled microwave that is not used. Any input?

2016 Forester GTS 2801QSF
__________________

__________________
2016 Forester GTS 2801QSF
sgtlm17 is offline   Reply With Quote
Old 03-28-2016, 06:13 AM   #2
Senior Member
 
Witch Doctor's Avatar
 
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 7,616
You are correct they should not be on the same breaker. I would separate them. It really makes no difference if it a microwave oven or not. The only thing connected to the A/C breaker should be the A/C. Not sure how they wired it either through a junction box, or just put two wires to the same breaker which is definitely a NO NO.
__________________

__________________
Rockwood #8289 WS 2012
F250 6.0 / Husky 16k
With 4 point leveling system
Witch Doctor is offline   Reply With Quote
Old 03-28-2016, 07:32 AM   #3
Senior Member
 
sgtlm17's Avatar
 
Join Date: Oct 2013
Location: New Jersey
Posts: 1,156
Yes I agree I thought it was odd. I will have to take a look at the wiring on Wednesday.
__________________
2016 Forester GTS 2801QSF
sgtlm17 is offline   Reply With Quote
Old 03-30-2016, 07:06 PM   #4
Senior Member
 
sgtlm17's Avatar
 
Join Date: Oct 2013
Location: New Jersey
Posts: 1,156
Ok took a deeper look. I have one 20 amp breaker. It's has 12ga wire and runs only microwave. It is labeled air conditioner in the box.
I have no other 20 amp breakers. The air conditioner / heat pump is connected to a 15 amp breaker with 12ga wire. It is labeled microwave.
Now obviously the installer mixed up the only two 12ga wires when connecting and is only a five minute fix to switch wires putting AC on the 20 amp breaker labeled air conditioner and the microwave on the 15 amp breaker labeled microwave. BTW I have run heat pump extensively and it does not trip 15 amp breaker but have not tried the AC. The is the microwave uses 12ga wire so it's safe to put it on the 15 amp breaker that's labeled microwave. My question is why use 12ga wire for the microwave if it was suppose to go to 15 amp breaker? I have the convection microwave will 15 amps be enough? Anybody with convection microwave please check and tell me if it's using a 15 amp or 20 amp in your rig.
__________________
2016 Forester GTS 2801QSF
sgtlm17 is offline   Reply With Quote
Old 03-31-2016, 02:32 PM   #5
Senior Member
 
bob dirt's Avatar
 
Join Date: Jan 2016
Location: Phoenix, Arizona
Posts: 293
My microwave/convection oven is on a 15 amp breaker. Usually 14 gauge wire is on a 15 amp breaker in residential and commercial applications. 20 amp breakers protect 12 gauge wire. The heat pump won't pull as many amps in the winter as it does when it's hot out. The refrigerant will be a higher pressure then and will make the compressor running amps run closer to the listed full load amp rating. 15 amp breaker may not work for it in the summer.
__________________
2016 Forester 2401WS MBS
Life is short...eat the cookie
bob dirt is offline   Reply With Quote
Old 03-31-2016, 02:46 PM   #6
Senior Member
 
sgtlm17's Avatar
 
Join Date: Oct 2013
Location: New Jersey
Posts: 1,156
Thank you for replying. Yes I'm putting the a.c. on the 20 amp. I was pretty sure conv/micro will be fine on the 15 amp. Even though they did wire the micro with 12ga for a 20amp breaker.
__________________
2016 Forester GTS 2801QSF
sgtlm17 is offline   Reply With Quote
Old 03-31-2016, 02:48 PM   #7
Senior Member
 
Witch Doctor's Avatar
 
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 7,616
Quote:
Originally Posted by sgtlm17 View Post
Yes I agree I thought it was odd. I will have to take a look at the wiring on Wednesday.
Your A/C should be on a 20 amp breaker, and I would think that the microwave could be on 15 amp. If you trip the breaker using it just change it to a 20 amp breaker to...
__________________
Rockwood #8289 WS 2012
F250 6.0 / Husky 16k
With 4 point leveling system
Witch Doctor is offline   Reply With Quote
Old 03-31-2016, 05:56 PM   #8
Senior Member
 
sgtlm17's Avatar
 
Join Date: Oct 2013
Location: New Jersey
Posts: 1,156
Switched the wiring today. Took seven minutes. AC / Heat Pump on 20 amp and convection / microwave on 15 amp. Tested and all works great.
__________________

__________________
2016 Forester GTS 2801QSF
sgtlm17 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 11:51 PM.