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I want to connect 8 gauge wires to a 30 amp safety switch (http://smile.amazon.com/Leviton-3032-2W-Toggle-Double-Pole-Grounding/dp/B002MPPTBQ), but the wire is too thick to wrap around the screws on the switch. What's the best way to attach the wires to the switch?

(don't worry, they're on a 30 amp breaker in the panel)

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  • Is this a 120v or 240v circuit? If you are using 240, then you will need to get a double pole switch. Mar 28 '16 at 20:06
  • I am, and it is.
    – iLikeDirt
    Mar 28 '16 at 20:33
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10 gauge wire should certainly fit on the screws; get a short bit of solid 10ga wire and pigtail that onto the switch. 10 gauge is legal for 30 amps, and a few inches of 10ga isn't going to defeat the purpose of running 8 gauge.

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  • But then you'll need to enclose the 8-to-10 connection inside a box to meet code. Mar 28 '16 at 14:22
  • @CarlWitthoft The switch also has to be in a box, so you'd just make up the pigtails in that same box.
    – Tester101
    Mar 28 '16 at 16:54
  • Wire-nuts should suffice. Mar 28 '16 at 17:33
  • This worked just fine.
    – iLikeDirt
    May 2 '16 at 1:31
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You'll need to either crimp-on cheap Fork or Ring Terminals or go to a budget blowing Switch Box.

big wires little screws

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  • I was not able to locate a spade connector that was rated for 30A/8awg. Are these common? Mar 28 '16 at 20:09
  • I hadn't needed them for years (kitchen range),, but they were readily at my local Electrical Supply store & online places like Grainger have them (that's where I got the pics). There are also much bigger & thicker ones for car batteries & alternator setups or you can even use subpanel lugs from that side of things.
    – Iggy
    Mar 29 '16 at 1:27

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