Battery voltage drops!!!
I have a 2015 Jayco Pinnacle with a residential fridge. When I am plugged in to shore power and have fully charged batteries (two of the biggest Trojan 6 volts that I could fit in the battery cases) m...
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re_tired wrote:
I also checked my truck and see that it has a 30 amp fuse on that wire to the connector. That's interesting. A chart shows you can only get 30 amps at the end of a 10 foot long 12 gauge wire at 12 volts. In other words, if there was a short maybe 25-30 feet away in the RV on that line, it would probably never blow the truck's 30 amp fuse.
That chart must be based on legal/safe limits, not on physical limitations. 12 gauge wire does not have a resistance of 0.04 ? per foot, but rather around .0016 ? per foot. A 10 foot length would have a theoretical short circuit current of around 750A at 12V.
