The current (amp) capability is determined by the wire size in gauge, rather than the voltage rating stamped on the insulation.
The most basic rating is 20 Amps for 12 gauge and 15 Amps for 14 gauge wire; however, it can get more complex than that for long runs of wire or for wires run through conduit with other wires. Hire an electrician if this sounds bewildering.
Devices are rated by voltage and amperage. If you have a source rated for 600 volts you can use a 250 volt device, but not vice versa.
No !
Yes, no problem at all going to a larger ampacity of wire. Larger size wire yes, smaller size wire no.
4 copper
With thick wires that have excellent insulation.
Devices are rated by voltage and amperage. If you have a source rated for 600 volts you can use a 250 volt device, but not vice versa.
No !
Yes, no problem at all going to a larger ampacity of wire. Larger size wire yes, smaller size wire no.
Use 8 gauge wire.
test light or volt meter
# 3 gauge
4 copper
With thick wires that have excellent insulation.
Amps * Volts = Watts Amps * 12 = 600 600/12 = Amps = 50 amps You would need a reserve capacity, so I'd go somewhere between 60 or 100 Amp rated transformer. Transformers are rated in volt-amps which is usually calculated the same as watts. But the term "watts" technically does not apply to transformers. So you need a 600 volt-amp transformer or, as Redbeard has suggested, you need an 800 or 1000 volt-amp transformer. That's a lot of amps for a 12 volt system so I recommend you double check your requirements. You will need a #2 gauge wire if your requirements are correct.
AWG # 10 wire on 30 amp circuit.
In the US and Canada, 10 Guage wire will suffice
10 gauge will work fine.