Re: Dual power supply (relay?)

Hey guys thanks for the quick response:

Results are:

11.92v @ PSU terminals going to relay
11.94v @ PSU terminals going to ramps

11.70v at relay and 11.30 at bed running max
11.92 at D8

I'm reading a 11.89amp draw from bed at terminals, and only 4 amp draw from ramps when extruder kicks on. I don't really trust these readings as it is only a 10amp max multi meter.

.4 amp draw from d8 to relay

Upon inspection of wiring there is by default 16ga from bed to relay. Then 14 GA from relay to PSU on V- wire. I put 16 GA on V+ by accident. (This project has been months of moving this, rewire that so something like this was bound to happen)

Could this be the voltage drop? I'm going to store to pick up thicker wire possibly 10-12 gauge.

But it seems if there is only a 12 amp draw at max power on bed and a 4 amp draw from ramps with extruder on, I should have sufficient power, or am I being current limited by my gauge of wire to bed & ramps.

Wire to bed is warm but by no means hot.

I am really liking the idea if stepping Up the psu to a 450w 37-40amp. Or larger.

Sorry if I can't provide enough accurate information, I'm not an electrician.

Thanks again for the help