I have installed a new pd9200 converter in a rv with no coach batteries. My question is how to hook it up. Do I just run the -DC and +DC outputs to the fuse panel and ground the case to the chasis? Or do I have to run the -DC to the chasis too?
Power Converter hook up without batteries
- Thread starter Acman44
- Start date
The friendliest place on the web for anyone with an RV or an interest in RVing!
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
Kirk
Well-known member
You will need a chassis ground connection as most(if not all) of the circuits use a chassis ground. There might be a connection to chassis ground inside of the 12V distribution panel. You can easily determine if there is by using your ohm meter. If you are replaceing an existing one, hook things up just as they were before.
Isaac-1
Well-known member
What kind of RV do you have?
Kirk
Well-known member
In that case you probably don't need it. Chassis ground is typically used for nearly all 12V systems. If you intend to ever power it from the tow vehicle you will need to have a chassis ground as all tow vehicles will use one.
Gary RV_Wizard
Site Team
Yes, hook it up as you described. You may want to add a chassis ground to the 12v buss negative side, but it is not required to install & operate the inverter. It just makes it easy to provide 12v ground without coming back to the negative buss bar.
For safety reasons, the PD92xx should also have its own chassis ground strap, called out in the install instructions.
For safety reasons, the PD92xx should also have its own chassis ground strap, called out in the install instructions.
John From Detroit
Well-known member
That actually should work.. However I'd consider adding batteries unless the RV is parked full time.
Now I do not know if this is ALWAYS the case but on my RV every FUSED 12 volt device returned to the 12 volt ground bus in the fuse box.. Every one.. None of the FUSED circuits returned to ground.
Now there are some "non fused" circuits.. Do not know how they were done..
For other reasons I would recommend a chassis ground.
Kirk
Well-known member
That is the #1 reason. At some point in the future it could save you or some new owner a lot of headaches if replacing or adding something to the 12V system.
Martian
Well-known member
If you have electric brakes a battery is required and brakes are required in some states at 1500 pounds and some states at around 3500 pounds.
So I got the converter hooked up, now I have another issue to figure out.
I have a 12v dc circuit for the water pump that runs approx. 97 ft round trip to the distribution panel. The problem is its mixed with 10ga and 12ga wire. The pump is 13A max. I know the 12ga won't handle 15A at 97 ft. Can I run 10ga from the distribution panel fused at 20 or 15A and add another fuse panel by the pump, approx 30ft. round trip. Then run the remaining 12ga (approx 41ft) fused at 15A from the second panel?
I have a 12v dc circuit for the water pump that runs approx. 97 ft round trip to the distribution panel. The problem is its mixed with 10ga and 12ga wire. The pump is 13A max. I know the 12ga won't handle 15A at 97 ft. Can I run 10ga from the distribution panel fused at 20 or 15A and add another fuse panel by the pump, approx 30ft. round trip. Then run the remaining 12ga (approx 41ft) fused at 15A from the second panel?
Isaac-1
Well-known member
See this voltage drop chart for 10% voltage drop for non-critical systems https://www.bluesea.com/resources/1437
Isaac-1
Well-known member
See this voltage drop chart for 10% voltage drop for non-critical systems https://www.bluesea.com/resources/1437
