A #12 aluminium conductor with an insulation factor of 75 or 90 degrees C is rated at 15 amp. Therefore the largest size breaker to protect that wire will be a breaker rated at 15 amps.
Normally it is a 20 amp using AWG 12/2 gauge wire. But it really depends on what size wire is on that circuit. If it is white AWG 14 gauge then use a 15 amp breaker. If it is yellow AWG 12 gauge then use a 20 amp breaker.
You listed no gauge wire. This is the required breakers.14 gauge - 15 amp12 gauge - 20 amp10 gauge - 30 amp8 gauge - 40 amp
For a 100 Amp breaker panel it would be 2 AWG. For 150 Amps it would require 2/0 (2 ought) aluminum wire.
14 gauge will handle it with a 15 amp breaker. If you use 12 gauge use a 20 amp breaker.
For 8-gauge wire, the appropriate circuit breaker size typically ranges from 30 to 40 amps, depending on the specific application and the type of load being connected. It's essential to consider the wire's insulation type and the installation environment, as these factors can influence the breaker size. Always consult local electrical codes and a qualified electrician to ensure safety and compliance with regulations.
The recommended wire size for a 100 amp breaker is typically 2-gauge copper wire or 1/0-gauge aluminum wire.
The recommended wire size for an 80 amp breaker is typically 4 AWG (American Wire Gauge) for copper wire and 2 AWG for aluminum wire.
The recommended wire size for a 70 amp breaker is typically 4 AWG (American Wire Gauge) for copper wire and 2 AWG for aluminum wire.
The recommended wire size for a 50 amp breaker is typically 6-gauge wire.
The recommended wire size for a 20 amp breaker is typically 12-gauge wire.
The appropriate wire size for a 25 amp breaker is typically 10 gauge wire.
The appropriate wire size for a 30 amp breaker is typically 10 gauge wire.
The recommended wire size for a 25 amp breaker is typically 10 gauge wire.
The recommended wire size for a 30 amp breaker is typically 10 gauge wire.
The recommended wire size for a 50 amp breaker is typically 6-gauge wire.
The recommended wire size for a 60 amp breaker is typically 6-gauge wire.
The recommended gauge size for a 100 amp aluminum wire installation is typically 2 AWG (American Wire Gauge).