Yes. #8 is a oversized by one size but it's total ok. You can always oversize on electric wire but never undersize.
No. A 20 amp breaker needs 12 gauge wire.
No, 10 gauge wire requires the use of a 30 amp breaker. A 20 amp breaker is only used on 12 gauge wire.
A domestic D/W uses 14 gauge wire.
Use AWG # 6 wire.
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 30 amp breaker, a 10-gauge wire should be used.
For a 60 amp breaker, a 6-gauge wire should be used.
The recommended wire size for a 100 amp breaker is typically 2-gauge copper wire or 1/0-gauge aluminum wire.
No, it is not safe to use 10 gauge wire with a 30 amp breaker as the wire is not rated for that high of a current. It is important to use the correct wire gauge that matches the breaker amperage to prevent overheating and potential fire hazards. For a 30 amp breaker, you should use at least 10 gauge wire.
The recommended wire size for a 50 amp breaker is typically 6-gauge wire.
No. A 20 amp breaker needs 12 gauge wire.
No, because NEC says that 12 AWG wire is the smallest wire that can safely handle 20 A. If you installed a smaller wire on a 20 A breaker you could possibly overheat the wire and cause it to fail, which can start a fire. It would not be to code. And the National Electrical code does not list a 13 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.