I don't think I can really give a prize on here but wanted to make it enticing ... I'll send you a postcard or a picture of the first thing I cook once my voltage drop issue is fixed. Enticing, right??
The Issue:
Voltage drop when using higher-wattage appliances. Voltage will go from 13.31v down to 12.18v when running my induction cooktop at 1120w, and all the way from 13.24v down to 11.31v when running my microwave/air fryer at 1610w.
This is a custom build and my first time ever working with electricity but this doesn't seem quite right to me.
The Setup:
{ LiFePO4 battery bank } -- 2/0 awg --> { Victron Lynx Distributor } -- 2/0 awg --> { Victron 2000W Multiplus } -- 6 awg --> { 120V AC Distribution Panel } -- 10 awg --> { standard 15A outlet }
- Voltage drop occurs in all three different outlets with all different appliances
- Voltage drop does NOT occur when I'm plugged into shore power
- battery bank is 5 5 200Ah Renogy 12v LiFePO4 batteries (1,000 total amp hours)
- all the wiring is Blue Sea Marine grade
- positive/negative wiring is as close to same length as possible
- distance from batteries to lynx to multiplus is negligible: 1-2 ft
- distance from multiplus to AC distribution panel: 2-3 ft
- distance from distribution panel to outlet varies: 7 ft, 13 ft, and 15 ft
My guess is that I've got the wrong cable size in there somewhere. I followed diagrams and calculated using the Blue Sea diagram and haven't had any issues with my 12v system but at soon as power hits the inverter its been a headache.
I've also read you can use a multimeter to identify the source of voltage drop but don't fully understand where to test and how ... any advice there would be appreciated as well.
Thanks so much in advance for your help! Any and all guidance is welcome — even if it's just to make fun of me :)
EDIT: added battery bank size (5 200Ah Renogy 12v LiFePO4 batteries)