Orion XS 50A DC-DC for 5th wheel setup

Q&A and troubleshooting
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1

Hi there,

I know that Orion XS is non-isolated but I was wondering is it ok to install it in the towing truck / 5th wheel setup and replace my current 30A isolated one provided cabling is good enough.

I’m referring to the GND wiring.

Thanks,

— ngm

2

@ngm011 Provided the towing vehicle and the 5th Wheeler have the same ground system it will be ok. Any system I have seen where the vehicle tows a trailer it has the same ground carried through so the non isolated Orion should be fine.

3

Hi Trevor, I don’t know any 5th wheel and TOV to share the same ground - they are separately grounded.

I was thinking to use negative wire from TOV’s starter battery all the way to the negative bus bar in the 5th wheel and then from the bus bar to the GND on the Orion XS?

— ngm

4

@ngm011 Hi ngm, I didn’t know that the grounds are isolated from tow vehicle to trailer. I have had many caravans and they have ground connected through a 12 pin trailer plug so I assumed 5th wheelers to be the same. Certainly for caravans, the grounds are tied through the trailer plug. For a caravan, the Orion non isolated would be fine but I’m not sure about your configuration.