"Daniel Who Wants to Know" wrote in
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Other than that I personally don't find #12 that much harder to work with
but then again I have run 4/0 aluminum wire for a main service entrance
before.

Most amateurs try to bend the end of the wire around the screw to form a
loop, thus making it difficult. I did the same until I watched an
electrician strip the sheathing off about a foot of wire, then stripped the
individual wire about 9" from the end and he used the 9" to easily wrap the
wire around the screw, then cut off the excess. It was speed and ease over
the cost of a foot of wasted wire.