generator charging

oadkinsoadkins Registered Users Posts: 19 ✭✭
do I have to install anything between batterys and charge controller if I use gen and 45 amp charger on cloudy days. thanks from a newby


  • BB.BB. Super Moderators, Administrators Posts: 32,027 admin
    I guess I need a little more information... If you have a 45 amp charger then you would need a:
    • 45 amps * 1.25 NEC derating = 56.25 amps ~ 60 amp breaker (or fuse) and rated wiring minimum.
    Is there something else you are asking about?

    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • mike95490mike95490 Solar Expert Posts: 9,363 ✭✭✭✭✭
    Nope, I just hook the battery charger to the batteries. If the sun comes out while charging, you may hit the batteries with a pretty large charge, I can hear my genset unload as the solar kicks in and i just go and shut it down.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    gen: ,

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