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 > Onan Generator Cranking Amps

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CA Traveler

The Western States

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Posted: 09/14/19 09:31am Link  |  Quote  |  Print  |  Notify Moderator

While faulty connections are certainly possible so is inadequate wiring.

I've already corrected several under sized wiring problems. Most notable was 9.1V (12.7V battery voltage) on the awning motor when retracting due to both Monaco and Carefree undersized wiring. Retraction is now reliable even if the awning structure is totally inadequate for virtually any wind. But the salesman will tell you that you have a great awning while not mentioning wind damage is not covered by warranty!


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bjbear

Cold Lake, AB, Can

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Posted: 09/14/19 12:08pm Link  |  Quote  |  Print  |  Notify Moderator

CA Traveler wrote:

Another testing idea: Remove the gen + wire and using a battery load tester and clampon ammeter measure the draw on the wire and also the voltage and compare that to the wire calculator. As long as I don't exceed the fuse rating it should provide a good comparison. Thoughts?


This will work. However, you will have to measure the voltage at both the end of the wire and the battery terminal at the same time as the battery voltage will drop as you add load and you need the differential voltage to be meaningful.


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CA Traveler

The Western States

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Posted: 09/14/19 02:27pm Link  |  Quote  |  Print  |  Notify Moderator

No problem as I carry several lengths of wire with alligator clips including one that is 50' long. Doesn't everyone?

Just kidding but I learned long ago that when measuring voltage you often need a known reference as in frame ground vs some "black" ground wire that is the actual problem.

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