i have an existing just bought a new table saw/ 230 volt/ draws 13.4 amps. factory wire size is 14 ga. wire, seems small but is factory, saw came from cab. shop. would like to hook up to existing circuit which has a 30 amp. breaker with each leg reading 122 volts and has large 6 ga. wire. can i use existing wire possibly with smaller breaker or pull new wire which i really don't want to do? thanks