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Almot's avatar
Almot
Explorer III
Mar 11, 2015

Lugs on #4 battery wire?

Need some education again - or maybe toss a coin. Running 10ft cable from 30A solar controller to breaker box and then to battery. The last 5ft from breaker box to battery is #4 wire with lug at one end. Now, WHICH LUG?

If you look at the top 2 lines in Genuinedealz - they have tinned copper lugs and "heavy wall lugs" (the latter are also tinned copper, as I understand, but with thicker walls).

All their products are good, I know this from previous purchases, but with these 2 kinds of lugs I feel like that donkey between two bales of hay, can't decide which one.

If this helps - environment is mostly dry but close to the sea all the time. Batteries are AGM and located "almost" inside, in trailer basement.

14 Replies

  • Almot's avatar
    Almot
    Explorer III
    SMK - preassembled cable by Genuinedealz will be the cheapest way and will look nice too. But as you remember from earlier discussion, most people here recommend to put a dielectric grease inside the lug, and I doubt that the shop will put any.
  • Heavy has always worked better for me, especially in applications where removal is commonplace or where corrosion could be an issue. I now have a terminal protection spray that deals with the corrosion issue so can use any weight lug if the installation remains as built.
  • The heavy wall is just that. Meant to be crimped such as Burndy Or Amp, may also be soldered. The regulars should be soldered.
    Art.

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