They are also making bad contact, and will cause arcing and fire. If they do, that indicates a bad job of wire nutting. They shouldn't even think about coming out of the nut. While their exterior covering is typically made from insulating plastic, their means of connection is a tapered coiled metal spring or interior grooves that thread onto the wires and holds them securely. Never tape wire nuts, except for a single wire on a nut (otherwise, those don't hold). Wire connectors are available in a variety of sizes and shapes. Also you have a chance of twisting in the wrong direction. Make sure the wires are square/even going in, pretwisting makes that harder. That is just dumb, the wire nuts themselves are about to do a fine job of that. If even the insulated parts of the wires start to coil around each other, that's fine, that's an indicator that that you're tightening it enough.Īlso, do not pre-twist the wires that will be going into the wire nut. You're worried about the wires twisting, they're supposed to twist. The location of splices shall be staggered to minimize the increase in profile to the harness.
It also sounds like you are being timid with the wire nut, and you really need to show it who's boss. The splice exhibits a smooth profile, proper strain relief, and is located in an area of the harness not subjected to flexure. They work better in the middle of their range. Now, you are pushing the limit of the wire nut's range, so it may be difficult to work with. Things the literature doesn't tell you that the data sheet does. If you mean these, they are not - oh wait, if you dig into the data sheet, they are rated for three #8.
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