Forum Discussion

pcoplin's avatar
pcoplin
Explorer II
Dec 06, 2015

PD4645 ugrade, from 25 amp Magnatec?

I currently have a Magnatec 6300 series (25 amp) converter in my camper. One battery, the batter is at the rear left side of a 9.5 foot camper. Quite a bit of wire to get back to the converter.

I plug in before I leave on a trip, never have shore power while camping. Recharge with a Champion 150 watt generator (I plan on a Honda 100w and solar next year).

I have a Intellipower PD4645 I pulled out of my old camper. Question is, when does it pull 45 amps? Besides the wire warming up possibly, would there be any problem not upgrading the wiring to the battery?

I have to look, but I'm guessing 8 gauge? This chart says 8 gauge is good to 30 amps at 15 ft.
http://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html


Thanks!
  • enblethen's avatar
    enblethen
    Nomad
    Dec 06, 2015
    Most likely the full would be when you first energize the converter to recharge a heavily depleted battery and have heavy demand 12 volt items operating.
    You could check your 12 volt power distribution center for a main battery fuse. This fuse (25 amp) could be left alone from the original converter. It may blow on you however. You could increase it to the rated capacity of the wire 40 amps. I doubt that it would ever blow a 40.
    Check around the battery for another fuse or circuit breaker. there should be one there rated at the wire ampacity.

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