Adding 15 amp breaker - Page 2 - Fiberglass RV


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Old 06-24-2011, 04:57 AM   #15
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Our breaker box has two 15 amp fuses in it. One for the fridge and one for the 110v outlets.
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Old 06-25-2011, 01:13 AM   #16
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Quote:
Originally Posted by Vicki A.
Okay...all of this talk about a larger breaker box, made me wonder if I need something larger also.
My pacer has a 15 amp breaker. Normally I would not have much on, a light or two. But there is an air conditioner hooked up. The side of the A/C says it is 6500 BTU and draws 6.1 amps. If nothing else, except maybe a light was on, do I need to up grade. Demo and building I can do, electrical stuff I'm a dud!
Thanks, Vicki
You're good to 12 amps total on a 15 amp breaker the rule being 80% of the breaker rating. Also each outlet counts as 1.5 amps so that = 8 on a 15 amp circuit.
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Old 06-25-2011, 12:00 PM   #17
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The 1.5 amp rule (180 va) applies to commercial work (load calculations) not residential according to the National electrical code. Too many people put way too much trust in GFCI breakers. In the OSHA class I teach ,I take a hair dryer which is turned on and protected by a GFCI and drop it in a 5 gallon bucket filled with water. After five minutes I remove the hair dryer from the bucket and it is still running (GFCI NEVER TRIPPED) GFCI plugs are designed for hot to ground faults not hot to neutral (grounded conductor) faults and are not the total answer to safety.
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Old 06-25-2011, 01:07 PM   #18
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NO ,the national electrical code says that an appliance( AIR CONDITIONER , garbage disposal ,dishwasher etc is not to exceed 50 % of the branch circuit rating , when the circuit also feeds general lighting loads. 50 % of 15 amps = 7.5 amps max current for the appliance . Your AC draws 6.1 amps so your okay. Best practice would be to have the AC on it's own circuit but if the trailer has only a 15 amp feeder-service ( main power supply) it does not matter 15 amps is 15 amps and the feeder is the limiting factor. If you have a 30 amp service then splitting the loads into two circuits may be benificial. Travel trailers are not subject to a lot of the code rules regarding
standard residential construction
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Old 06-25-2011, 06:08 PM   #19
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The Canadian Electrical code has an entire section dealing with trailers and mobile homes, however it has to do mostly with power distribution in parks and hook ups. CSA ( Canadian Standards Association) deals with construction and approval.
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Old 07-07-2011, 06:19 PM   #20
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Adding Circuits

Francene

Your discussion on adding circuits became a look into the various circuit breakers and other electrical appliances.

Steve Dunham summed it up rather nicely. If you want more power (presumably to run two or more devices simualtaneously) you have to have more than a 15 amp feed from the source.

I am on my third reno and I started each by installing a 30 amp service. In this way I can have as many circuits as I want, knowing that I can operate two or more appliances concurrently (provided the total load is less than 30 amps).

Bill Reilly
Picton, Ontario
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