using an undersized solar controller

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Plucka
Plucka Registered Users Posts: 130 ✭✭
in Solar Beginners Corner #1
As an emergency can one use a 15 amp 12 volt solar controller with panels putting out 17 amps
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #2
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    Only if it's a MPPT style controller.   PWM controllers have a series FET that is limited in the amps it can handle.  Exceed that for .001 second and it's fried.  
    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

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

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  • Plucka
    Plucka Registered Users Posts: 130 ✭✭
    #3
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    Thanks Mike, it is a mppt controller  and could it only happen on very good solar day
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