Best wiring for powering a heatbed?

[Roxy]

Wow, we use 14 or 16 gauge wire on ours? I guess that is overkill.

I don't think you're using too thick a wire, to be honest. I've found another table that recommends 18 AWG for 12V / 6A applications. The only problem I can see with using a thicker wire is making sure you have strain relief at the connection points on the bed.

I wasn't comfortable with the 14 gauge I initially used on mine. I'm at 12 gauge. This isn't a place to wimp out. You want big wires!