Joseph Oberlander wrote in message ...
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All commercial installs that I know of use heavy gauge wire, preferably
run in its own conduit or seperately. Speaker wire isn't rated for
pulling with AC, though, while electrical wire is.

Just so that the OP doesn't misunderstand you...

NEVER ever run any wire used for anything (speakers, doorbells,
thermostats, TV cable, whatever) other than the building's electrical
power system (the AC, the stuff that gets fed by the circuit breaker
box) in the same conduit, wire bundle, hole drilled in a wall stud,
etc., or along the same path and next to, the actual house electrical
wiring. Even if it's the exact same kind of wire, house wiring and
every other type must be kept separated.