Tom (tmazz), an electrical engineer, is correct, when it comes to your house wiring NEC codes. 12 AWG - 20 amps, 10 AWG - 30 amps, 7 AWG - ~47 amps.
However, the continuous Current Carrying Capacity of the wire & dielectric I utilize can handle quite a bit of current (amperage) before melting either the wire or insulation (from laboratory testing) as follows -
12 AWG - 45 amps
10 AWG - 58 amps
7 AWG - 90 amps
The above are somewhat crazy numbers and tmazz is correct again that the limiting factor is the connectors themselves. I have personally load-tested my cable line-up with my copper-based connectors with a steady 20 amp load (continuous over 6 hours) and both the cables & connectors remained cool (at ambient temperature) "to the touch". At the time, I also tested some "off-brand" audiophile rhodium plated connectors. The rhodium-plated connectors were very warm "to the touch" with the cable itself remaining cool (at ambient temperature). Kind of makes sense since rhodium is considered a poor electrical conductor.
The maximum instantaneous current (~ 800ms) will be > 200 amps for all of my power cable products...
I hope this helps...
Cheers,
Pete