Power in Flux
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Thread: Show us your wiring diagrams!

  1. #71
    Seņor Member podolefsky's Avatar
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    Oct 2010
    Boulder, CO
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    Quote Originally Posted by mcf12 View Post
    For those wiring on board chargers, does wiring on the battery side of your contactor make a difference? I had last build that way, but I am not sure I want to have to have the contactor closed for charging? Charger and bms will be in charge of cutting things off if it gets fishy, but I might be forgetting something obvious.


    Wire the charger directly to the battery, not through the contactor. It's actually better if the charger isn't connected to the controller when charging. If you want an extra safety let the BMS cut off power to the charger with a relay on the AC input.
    - Noah Podolefsky -
    The GSX-E

  2. #72
    Senior Member
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    Feb 2012
    Edmonds, WA
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    I used one of these solid state relays on the charger port to let the BMS shutoff charge current. The charger sees the current drop to zero and shuts down.

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