Northern Arizona Wind & Sun

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Battery Interconnect & Inverter Cables

Deep Cycle Battery & Inverter Connection Cables

Various sizes and lengths of heavy duty battery interconnect cables, and inverter cables. All have terminal lugs and are suitable for any bolt-on type terminals.

What size battery interconnect cable do I need? This varies with the arrangement of the batteries, but in general choose a length that is about 2-3" longer than the distance between posts. Avoid any sharp bends, but you don't want them too long either. Cable size will vary also - if you have a large inverter load you will probably need the 2/0 or larger.

Note: We are currently transitioning from using welding cable to using MTW UL listed cable for all of our battery/inverter wiring. Many solar companies sell welding cable for use with batteries and inverters. There's no safety issue when using welding cable, but it can cause problems with some electrical inspectors. Technically, welding cable is only meant to be used on welding machines. When welding cable is used on anything but welders, it violates the national electric code (NEC). This is why we've started using MTW listed cables. MTW stands for "Machine Tool Wire" and it's essentially the same thing as welding cable, but with a more versatile electrical listing. This means it's approved for many more uses than standard welding cable. If you would like to learn more about cable and wire listing and use, please read this article entitled "Clarifying Confusing Cables" from Home Power Magazine. All other cables are welding cable, unless otherwise specified.

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