Originally Posted by pteck
True that there are variations.
Was just wondering if anyone has done a load test on their 12V draw with everything on. And what type current load they are seeing.
I'd like to try to plum ll the 12V loads behind the latching relay, through my solar controller, so I can take advantage of the load monitoring, and auto low-batt shutoff.
I can certainly do my own test, as I've got a clamp meter.
Though if the converter-charger, charges through the relay, I believe that's a 50amp charger, which exceeds my MPPT controller passthrough capability of 30amps.
I can pretty much guarantee that my relay sees 55A on a regular basis. It's a safe bet it is rated to take it.
Total 12V load on the trailer is "interesting". The inverter is the big power user. They wire it straight to the battery. The solar side does the same thing. The converter does or does not go through the relay depending on which way the wind is blowing in JC the day they do the drawings
Hitch jack goes straight to the battery as does the breakaway cable power.
The stuff that is on the other side of the relay is the fridge, the water pump, a bunch of lights, the door bell, and all the weird small loads like the stove ignitor. I doubt they all add up to much over 10A.
Bottom line is that the converter would be the big power item through the relay (if it is on the load side).
If you are trying to do a shutdown, the inverter is your big issue. It presents a current drain even when powered off. Full up running it will pull over 100A. Things like the propane detector are also a constant load and you don't want to dump that.