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Old 05-29-2016, 07:51 PM
cardinalflier cardinalflier is offline
Join Date: Jul 2015
Location: Granite Bay, Ca
Posts: 131
Default Fuel pump tripping circuit breaker

My Weldon fuel pump occasionally trips my new 5 amp circuit breaker when turning on the fuel pump for my first start of the day on my IO360. Thoughts? Is 5 amp enough for thr Weldon pump? Is my pump starting to fail? The c/b won't trip again during the day, unless my battery voltage drops. I solved my battery voltage problem by replacing the 40 amp alt with a PP 60 amp. This is all after i completed a panel upgrade with a complete Dynon Skyview install in my RV6. TIA for the help. Bruce
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Old 05-29-2016, 08:37 PM
g zero g zero is offline
Join Date: Jun 2007
Location: palm coast fl.
Posts: 945
Default Pump

5 amp sounds pretty low , might check the model and amp draw . 10 amp is most common .
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Old 05-29-2016, 08:37 PM
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Jesse Jesse is offline
Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,683

The Airflow Performance pump requires at least a 7.5A breaker. I assume the Weldon should be the same for high pressure.
Jesse Saint
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Old 05-29-2016, 11:22 PM
lr172 lr172 is offline
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,766

My experience is most of these pumps take somewhere in the 5 amp range. It is an electric motor and they have a higher in-rush current at startup and depending upon how fast your breaker is, it can trip. I would recommend a 10 amp breaker and appropriate wiring for these pumps. Running a breker that close to expected current is a potential problem.

N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
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