ragu
New Member
Posts: 1 
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Post by ragu on Jul 21, 2016 20:53:32 GMT -8
New and very excited and purchase a 50 watt model rng 50p and the solar charge controller is ce rohs 2410 10amp and I have read some post all over the net and a few people said its ok to hook up the controller to a negative frame ground like my popup trailer yr 87 neg to neg pos to pos and in the user manual it tells me there a common positive pole inside and if grounding is needed ground the positive pole. So what does this mean really?.I will not be using the load side maybe some day if I could I would put all my load off the battery, maybe use the usb plug on the controller other than that I would put a inline fuse of 10 amps battery to controller. and the panel said 15 amp fuse max so one there as well panel to controller.
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Post by spiderbob on Aug 27, 2016 19:35:52 GMT -8
Yes, you can do that, but you also must be very careful. If you have a controler aready in your popup trailer for it's battery, it is negative ground. This is where you can start getting into a pickle. Put if you have nothing else but the solar controler, just stay that way.
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Post by johann on Nov 6, 2016 13:12:20 GMT -8
Many cheaper controllers are using a positive common. Meaning that all positives from panel and load and battery terminals are wired together inside the controller.
All the minuses are kept separated since they are switched on and off as needed by the controller program. The positive is not switched like in many other systems.
If you would have a negative ground car system like most cars are ,including trailers, then you can not hook up the positive from panel terminal nor battery terminal nor load terminal to the ground/metal/body of a car. Your minus post of the battery in that car is already grounded and connected to chassis/ground and putting any of the positive wires to ground/chassis will shorten the battery in that car.
To take it further,
If you would wire the negative wire of your panel terminal together with the negative wire of your battery terminal then you bypassed the controllers control circuit and the solar panel will charge the battery with everything the panel can put out and the controller will not be able to shut the panel down even when the battery is full.
Want more?
If you connect the minus of the load terminal with the minus of the battery together then the load terminal stays on all the time and can not be controlled either.
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