Just looked at my handy dandy electric wire chart, you can safely run a 10 gauge wire
thoght i was the only one on here with a code book,, hehe good work your right 10 ga is rated for 30 amp max. but it depends on what kind of wire you are useing stranded or solid? i know it sounds stupid but i see it all the time people get it from work see its 10 ga and think it will this work well it will but poorly very poorly, dc electricity flows on the outside diam. of copper wire on solid wire you dont have as much outer diameter now on stranded wire the elect. flows on the outside of all those little wires and wa lah, power amp! long story short your ok as long as its stranded but the way you said made me wonder solid i would'nt dare put on there but a kit og 8ga is only like 30 bills at wal - mart dont need those real gold terminals and such they dont add hp! just a cheapie will do in your case good luck buddy!