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  1. #1
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    How is RV power distributed for charging?

    My 25G has a 30A service and a WFCO 8955 converter (55 amp charger).

    I'm considering a WFCO Lithium replacement converter (it's only a 50 amp charger though).

    Does the distribution panel limit the maximum charge current based on available current after all loads are totaled up?

    Meaning:

    After a weekend of dry camping, I need to recharge the batteries.
    If I'm running the A/C's and some other stuff cleaning up; I'm around 28 amps now from shore power.
    It doesn't leave much for charging before maxing out the service.

    From the spec's, for charging, the converter draws about 6A @ 120VAC for max charging (14.6VDC @ 50A), but
    I only have 2 amps left.

    The 25G has load shedding, so it's supposed to cut off the water heater, one or both A/C's to keep it from over loading.
    Does the battery charger have priority for max charging or only uses what's left?

    I know it's kind of a really technical question, but it would help me decide if buying a separate charger for the batteries would be more practical. As mentioned in another post by @Heavysledz, plugging it into shore power separately might be better.

    I'm putting in 554 Ah LiFEPO4 battery bank, so less than 50A charge would take more time than I want.

  2. #2
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    The WFCO panels don't have any smarts beyond circuit breakers. For that matter their chargers don't have much for smarts either.

    I can't find any technical info on the 'load shedding' though I would think the charger/converter would have top priority. The 12V systems are critical, lights, controls, etc. If I had that rig I'd read the manual very carefully. Knowing exactly how it shuts things off sounds like very critical information.
    Rick

    2019 Reflection 150 273MK
    2015 Ford F350 CC SB Lariat Powerstroke
    PullRite Superglide

  3. #3
    Site Sponsor gbkims's Avatar
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    Quote Originally Posted by deeuubee View Post
    My 25G has a 30A service and a WFCO 8955 converter (55 amp charger).
    ...
    The 25G has load shedding, so it's supposed to cut off the water heater, one or both A/C's to keep it from over loading.
    Does the battery charger have priority for max charging or only uses what's left?
    From GD Parts Lookup it appears 25G uses Precision Circuits Midi-PCS
    Momentum 2021 25G-Class > Electrical
    MONITOR PANEL 30 AMP EMS MIDI-PCS - REF ID 361WHACMIC4.0K192 https://www.granddesignrv.com/owner-...s/detail/59643
    TERMINAL BLOCK MINI PCS I/O MODULE https://www.granddesignrv.com/owner-...s/detail/58453

    Looks as though it'd shed 4 loads
    Click image for larger version. 

Name:	Midi Load Shed Order 361WH2ACMIC4.0K192 - Rev 2019-08-07.jpg 
Views:	2 
Size:	46.2 KB 
ID:	32845
    https://precisioncircuitsinc.com/product/midi-pcs/
    http://www.precisioncircuitsinc.com/...i-Manual-B.pdf

    Momentum G-Class 30A
    http://precisioncircuitsinc.com/wp-c...n-08-07-19.pdf

    One Control on some models is handling load shedding.
    Last edited by gbkims; 03-21-2021 at 06:13 AM. Reason: Typos
    - Gene

    Kim & Gene
    2015 Reflection 317RST
    2017 Ram 3500 CC LB 4x2 6.7 CTD AISIN 3.73 DRW Auto Level Rear Air, BD3, Prodigy P3, Aux Tank

  4. #4
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    Drives me crazy when people don't follow up, so...

    I just wanted to say that I bought a separate 75A Charger, and thanks for the input.

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