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Old 11-01-2011, 07:22 AM   #20
Larry M
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City: Jacksonville
Join Date: Nov 2008
Posts: 11,681
RE: How big of a charger do I need?

Quote:
GonzoF1 wrote:
Something the guys at Iota pointed out to me was to be careful not to get a charger that the output of the genset can't cover with the other loads you might need while it's running. That said, I may back down to the 55 Amp instead of the 75 Amp.
If your daily amp hour usage at anchor is ~150 amps that 55 amp charger and generator will have to run*more than 3.5 hours and it still won't cover your daily usage.** If you have the 75 amp the run time will be 2 plus hours.* The typical marine hot water heater of 6 gallons draws about* 12.5 amps AC and recovers in about 45-60 minutes.* The Iota charger needs 18.5 amps at full load.* Since you'll be running the charger probably all the time the generator is on but not the hot-water heater what other loads are you concerned about?***How big is your generator?* I would get the biggest charger that fits the system so you aren't running the generator anymore than you have to.
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