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 > Flexible solar controller cables?

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jaycocreek

Idaho

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Posted: 10/07/22 10:46am Link  |  Quote  |  Print  |  Notify Moderator

What kind of wire are you guys using from the solar controller to the battery and solar panels?..To the solar panels is not an issue but to the battery is..

I have tried Renogy and some other tray cables and they are either to stiff or to big for the Victron 75/15..

Is there a place to get them already made up and flexible?

Thanks


Lance 9.6
400 watts solar mounted/200 watts portable
500ah Lifep04

Cptnvideo

Arizona - most of the time

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Posted: 10/07/22 10:59am Link  |  Quote  |  Print  |  Notify Moderator

I added a 1500 watt MSW inverter to a previously owned Class C MH. I ordered a single large (black) cable with lugs (don't remember the gauge, but it was at least thumb size). I cut it in half, bared the ends, attached the bare ends to battery clamps, then to one of the batteries. I put red tape on the ends of the + cable.
I believe the same could be done for solar controller to battery.


Bill & Linda
Arizona
2019 Dodge Ram Laramie 3500 dually 4x4 diesel
Hensley Trailer Saver BD5 hitch
2022 Grand Design Solitude 378MBS
1600 watts solar, 3kw inverter/charger, 5 206AH LiFePo4 batteries for 1030 ah

shastagary

minnesota

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Posted: 10/07/22 11:26am Link  |  Quote  |  Print  |  Notify Moderator

one of the reasons solar panel cable is stiffer than some other wire is the insulation is rated to be exposed to the sun and not break down it also has better abrasion resistance than some other wire.

shastagary

minnesota

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Posted: 10/07/22 12:12pm Link  |  Quote  |  Print  |  Notify Moderator

you could use a terminal strip next to the solar controller to connect thicker cables from the battery and then a shorter pieces of thinner wire from the terminal strip to the controller that fit its terminals.
doing so will keep the voltage drop to the batteries to a minimum it depends on how far your batteries are from the solar controller.

Lwiddis

Southern California :(

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Posted: 10/07/22 12:14pm Link  |  Quote  |  Print  |  Notify Moderator

WindyNation 10 gauge from each of my three panels to the combiner box, 8 gauge from the box to the controller and 6 gauge from the controller to the battery.


Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


2oldman

NM

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Posted: 10/07/22 12:40pm Link  |  Quote  |  Print  |  Notify Moderator

This place should be able to help.

You want welding cable, maybe #6. My system is 48v so I'm only 15 amps.

2oldman

NM

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Posted: 10/21/22 05:19am Link  |  Quote  |  Print  |  Notify Moderator

you're welcome

StirCrazy

Kamloops, BC, Canada

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Posted: 10/21/22 08:58am Link  |  Quote  |  Print  |  Notify Moderator

use wire ferrules to go to the right size for your victron.


2014 F350 6.7 Platinum
2016 Cougar 330RBK
1991 Slumberqueen WS100

2WheelJB

Chicago

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Posted: 10/21/22 06:37pm Link  |  Quote  |  Print  |  Notify Moderator

Use this website to calculate the wire size you need:

https://www.omnicalculator.com/physics/dc-wire-size

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