Thank you for the fast replies.
The wiring from the battery under the chassis is 10 AWG, but appears to connect to a 14 AWG at the wire tail going into the power supply. I could be wrong about that.
With the 10 AWG on a 12 foot run I'd lose a bit over 4 percent (13.8v down from 14.4v, if the WFCO gives me 14.4v. Otherwise I'd be getting 13v from the 13.6v absorption charge). I'm assuming the converter is giving 25 amps to give me a little wiggle room. I think I'm going to go with 4 AWG instead, if the company lets me change my order.
Also I don't know if the 8735 is malfunctioning at all, I'd just heard it was a common issue in the 8900 series and hadn't heard much about 8700s. I'll have about a week to figure it out, once we've moved the rest of our things out of the old apartment. I haven't got a way of measuring the voltage just yet, though I will be installing a Trimetric TM-2030 at some point soon and will get a voltmeter/ammeter too.
If I do end up replacing the 8735 I'm considering the PD4135, since it's a direct replacement and with my inexperience I thought it best to keep it simple. I haven't been able to find out if this model can manually initiate boost mode (has integral Charge Wizard but doesn't seem compatible with pendant- maybe a button on the panel?). My battery bank is only 170aH (2 Interstate srm-24) and the limited tongue weight of my tow vehicle will probably cap me at 2 batteries total (will upgrade to T-105s next time around, just didn't want to toss the new battery that came with the camper).
Thanks again,
-Ian
PS- I'd been having trouble posting or previewing posts the last few days and just realized it's because you can't use the percent sign!
