Replace converter/charger with PD9245C
My electrical guru is out having fun and this is not clear to me. I removed the converter/charger from a Centurion 3000, leaving the fuses and circuit breakers. I need to tie in the 12V positive ...
Forum Discussion
Good Lord JJRBuss,
I didn't think this could be all that difficult, I have only been doing this stuff about 60 years. Before I got my ship's engineer' licenses, I sailed as electrician. Since I retired, I have been working on other peoples expensive boats and a few RVs.
You do not want the converter/charger to ever be isolated from the house bank.
What you do want is the house distribution to be completely dead when that contactor is open (disconnect is off). This is for both convenience and safety.
If the converter is connected directly to the house bank, that will provide the best performance.
As to wire size, #10AWG is actually good 55amps Continues in open air if the insulation is 75°C Like THHN. That wire is what you can get at Lowes Depot. Even with the 45Amp rating of the PD9245, there is not much chance that you will be able to load it that heavy unless you house bank is a couple or three 8Ds that are really very dead.
The negative lead from the converter should be the same size and either to the house bank proper or a really solid ground.
If you look at most wire size guides, they are not inclusive and are usually not the best sizes for such situations.
And yes, you can ground the PDs ground lug to the coach chassis, and that is not a bad thing to do, but if the PD is plugged into a grounded outlet, it is not really required. It is a safety thing mostly. That should carry very little current.
Matt
I didn't think this could be all that difficult, I have only been doing this stuff about 60 years. Before I got my ship's engineer' licenses, I sailed as electrician. Since I retired, I have been working on other peoples expensive boats and a few RVs.
You do not want the converter/charger to ever be isolated from the house bank.
What you do want is the house distribution to be completely dead when that contactor is open (disconnect is off). This is for both convenience and safety.
If the converter is connected directly to the house bank, that will provide the best performance.
As to wire size, #10AWG is actually good 55amps Continues in open air if the insulation is 75°C Like THHN. That wire is what you can get at Lowes Depot. Even with the 45Amp rating of the PD9245, there is not much chance that you will be able to load it that heavy unless you house bank is a couple or three 8Ds that are really very dead.
The negative lead from the converter should be the same size and either to the house bank proper or a really solid ground.
If you look at most wire size guides, they are not inclusive and are usually not the best sizes for such situations.
And yes, you can ground the PDs ground lug to the coach chassis, and that is not a bad thing to do, but if the PD is plugged into a grounded outlet, it is not really required. It is a safety thing mostly. That should carry very little current.
Matt
