Daisy chain cable size?

[swimmer_spe]

I will be boondocking for a week. I have several deep cell batteries that I plan to daisy chain them. I know how to do it, but I do not know with what to do it with - specifically the gauge of wire. I can get either 4 gauge or 1 gauge. Can I go with the 4, or is the 1 needed?
Only thing I'll be running is the furnace and lights.

[wa8yxm]

The bigger the cable the better the cable the cables are bigger at WELDERS ARE US

Ideally you use the same size as the main cable from the battery to the rest of the RV. or bigger.

For parallel I might "Cheat" depending on what's on hand
But Ideally you use the same size as the main cable into the RV.. Or bigger.

[time2roll]

#4 all day long.

https://www.customcableusa.com/products/custom-battery-cable-marine-grade-by-the-foot

[pianotuna]

Best way would be to used balanced wiring.

http://www.smartgauge.co.uk/batt_con.html

[CA_Traveler]

Assuming 10' one way and 15A load 4 ga is MORE than adequate.

[BB_TX]

4 ga is good for 55 amps and up depending on the type wire you use. Furnace and lights will not test that at all.

I assume you are paralleling multiple 12 volt batteries.

[Bobbo]

You will get less voltage drop, hence more power, with 1g cables. If you have the option, always go with larger cables. Will the 4g cables work acceptably? Yes.