RidingWithStymie
New Member
Hello friends,
I have been reading this forum for a few years, but this is my first post. I would be grateful for advice on what wire size to use for the following simple 12v solar system in my van. I will gladly provide more detail or even photographs if requested.
I’m about to add a second Lithium battery in parallel. I will follow best practices for wire layout, but I’m confused as to wire size. I have consulted two different charts/calculators online and they give different results.
My setup:
Wires: All of my wires are currently 10AWG
Solar Panel: 1 x 200 watt 12v monocrystalline panel on roof
Charge Controller: Renogy Wanderer 30A PWM
Batteries: 2 x 100Ah SOK 12V LiFePO4 (Parallel)
NO inverter.
Everything I run is 12-volt via either USB or cigarette lighter connector. I run the following:
12v Alpicool fridge
Laptop computer via 12v cig lighter cord (no inverter required)
WeBoost cell signal booster
Charging USB items, such as phone, etc.
(Soon I will add a Starlink dish (12v))
What size wires do you recommend to connect the batteries to each other and out to the charge controller and out to the downstream? I assume they should all be the same size?
Also, I have 30A breakers both to and from charge controller. Should I also add 30A breakers inline from batteries to downstream?
I appreciate anyone’s advice/suggestions. Please feel free to ask questions.
Thank you,
Greg
I have been reading this forum for a few years, but this is my first post. I would be grateful for advice on what wire size to use for the following simple 12v solar system in my van. I will gladly provide more detail or even photographs if requested.
I’m about to add a second Lithium battery in parallel. I will follow best practices for wire layout, but I’m confused as to wire size. I have consulted two different charts/calculators online and they give different results.
My setup:
Wires: All of my wires are currently 10AWG
Solar Panel: 1 x 200 watt 12v monocrystalline panel on roof
Charge Controller: Renogy Wanderer 30A PWM
Batteries: 2 x 100Ah SOK 12V LiFePO4 (Parallel)
NO inverter.
Everything I run is 12-volt via either USB or cigarette lighter connector. I run the following:
12v Alpicool fridge
Laptop computer via 12v cig lighter cord (no inverter required)
WeBoost cell signal booster
Charging USB items, such as phone, etc.
(Soon I will add a Starlink dish (12v))
What size wires do you recommend to connect the batteries to each other and out to the charge controller and out to the downstream? I assume they should all be the same size?
Also, I have 30A breakers both to and from charge controller. Should I also add 30A breakers inline from batteries to downstream?
I appreciate anyone’s advice/suggestions. Please feel free to ask questions.
Thank you,
Greg