NEC Section 310.4 requires a 1/0 AWG and larger be used in parallel.
The National Electrical Code (NEC) does not specify a minimum wire size for running wires in parallel. However, it is recommended to use wire sizes that are appropriate for the current load and to follow industry standards and best practices. Typically, wire sizes are chosen based on the current-carrying capacity needed for the circuit.
The National Electrical Code (NEC) permits a minimum wire size of 14 AWG for general lighting and receptacle circuits in parallel installations.
I think you mean either what is the correct size or minimum wire size needed when a branch circuit is protected by a 20 A breaker. The size is 12 American Wire gauge (AWG). 14 AWG is used for 15 A circuit and 10 AWG for a 30 A breaker. The lower the gauge the larger the cross-section of the wire.
The larger the AWG number the smaller the wire. 10 AWG wire can carry more current than 12 AWG wire.The wire sizes of 24 and 26 are the smallest that are used in the electrical.See related links below
It depends on the length of the run
The minimum wire size for desk lamp cords should be 18 AWG (American Wire Gauge). This size can safely handle the current typically used by desk lamps without overheating or posing a fire hazard.
1/0 wire
In the CEC only 1/0 and larger conductors can be run in parallel.
The National Electrical Code (NEC) permits a minimum wire size of 14 AWG for general lighting and receptacle circuits in parallel installations.
14 AWG
According to the 2008 National Electrical Code, the smallest wire that can be run in parallel is a 1/0 AWG (American Wire Gauge). If the wire you are using is smaller than a 1/0 AWG, you will need to increase the size of the wire to handle the amperage (Table 310.16 of the NEC).
The minimum size wire that can be paralleled together stated in the electrical code book is a #3 copper conductor.
I think you mean either what is the correct size or minimum wire size needed when a branch circuit is protected by a 20 A breaker. The size is 12 American Wire gauge (AWG). 14 AWG is used for 15 A circuit and 10 AWG for a 30 A breaker. The lower the gauge the larger the cross-section of the wire.
When you talk of voltage, you should be thinking of the insulation factor of the wire. By the same token when you talk of wire size, it is based on the amperage the wire is required to handle.
The larger the AWG number the smaller the wire. 10 AWG wire can carry more current than 12 AWG wire.The wire sizes of 24 and 26 are the smallest that are used in the electrical.See related links below
It depends on the length of the run
It should be on a 20 amp breaker with #12 THHN wire. The grounding wire is typically permitted to be one size smaller, so #14 AWG bare or green wire for ground.
To do so LEGALLY, the circuit breaker must not be rated at a capacity (in AMPS) greater than the SMALLEST wire.