Wire size is based on the amperage drawn. To find the amperage, the voltage must be stated. Use this formula to find the amperage. I = W/E. Amps = Watts/ Volts. Once you have the amperage, restate your question using the new found amperage or state the voltage that supplies the lights.
#12/2wground & a 20 amp breaker should be enough for lights,receptales.
For a 15 amp circuit, a 14-gauge wire should be used.
For a 30 amp breaker, a 10-gauge wire should be used.
For a 60 amp breaker, a 6-gauge wire should be used.
For a 15 amp circuit, a 14-gauge wire should be used.
A 6-gauge wire should be used with a 60 amp breaker.
A hot wire is shorted to ground. Nether the lights nor the radio should draw that much current. You have a wire crossed somewhere.
Provided you use wire that is rated for 20 amps.
For 6 can lights on a 15 amp circuit, you can use 14/2 AWG (American Wire Gauge) NM-B (Romex) cable. This cable consists of three wires: a black (hot) wire, a white (neutral) wire, and a bare copper (ground) wire. Make sure to consult local electrical codes and regulations before proceeding with the installation.
For a 15 amp circuit, it is recommended to use 14-gauge wire.
For a 100 amp service in copper, a wire size of 3/0 AWG should be used.
For a 50 amp service, a 6-gauge wire should be used to safely handle the electrical load.