I agree in that using AWG 14 for anything 80 amps is going to be a fusible link.I don´t think that AWG 14 is a good choice, according to wikipedia it is rated for 15 to 25A. The isolation would burn off at 80A.
You definitley don´t want to be loosing 60W over a meter long piece of wire, unless you want it to glow red.
It seems that AWG 6 to 4 would be about right.
Hi,Copper with a thick oxide coating will radiate 150,410 Watts per M^2 just before it melts at 1358 °K. So 8 sq. in. is what fraction of a square meter?
The estimate off 776 watts per 8 square inches came from that estimate.