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Yes but there are two stipulations, one that the join or splice must be made in a junction box that is accessible and has a removable cover and the second stipulation is that the breaker that is supplying the power can not be larger that the smallest conductor. In this case no breaker larger that a 20 amp breaker as #12 wire is only rated at 20 amps..
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What size wire for 100 feet 20 amp circuit to run pond fountain?
12 gauge underground wire or if you think you will ever add any devices to this circuit use 10 gauge.
Is it safe to use 10 gauge wire on a 20 amp breaker for a microwave?
No, 10 gauge wire requires the use of a 30 amp breaker. A 20 amp breaker is only used on 12 gauge wire.
What is the maximum amount of amperage allowed on a 10 gauge wire if it's part of a 480 VAC circuit?
10 AWG should never carry more than 30 Amps.
What size conduit is correct for 10-3 gauge wire?
You can pull 10 #3 gauge wires in a 2 1/2" conduit.
How many electrical receptacles on 15 A breaker with 12 gauge wire?
In the United States and according to the NEC, in commercial and industrial installations, you are limited to 10 receptacles on a 15 amp circuit. The size of the wire is not a determining factor. There is no limit to the number of receptacles on a circuit in a home and there may be local codes where you live that have stricter requirements.
