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1/0 wire
Use black wire and identify the phases with the proper coloured phase tape. American color convention: Brown, orange, yellow, but you CAN use anything but grey, white or green for the "hot"
NEC Section 310.4 requires a 1/0 AWG and larger be used in parallel.
see American Wire Gauge. The larger the number the small the wire size.
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
1/0 wire
1/0 wire
14 AWG
In the CEC only 1/0 and larger conductors can be run in parallel.
Use black wire and identify the phases with the proper coloured phase tape. American color convention: Brown, orange, yellow, but you CAN use anything but grey, white or green for the "hot"
To do so LEGALLY, the circuit breaker must not be rated at a capacity (in AMPS) greater than the SMALLEST wire.
NEC 230.56 Conductor with higher voltage to ground on a 4 wire delta service should be ORANGE in color. Use orange wire or mark with orange tape at the ends.
NEC 310.16 conductor ampacities NEC 240.4(D) For residential installations the smallest wire to be used is 14 AWG (15 amps rating) and for commercial installations the smallest wire to be used is 12 AWG (20 amp rating)
3/0 awg wire
Answer for USA, Canada and countries running a 60 Hertz supply service.The star point will have a white wire connected to it or a black wire identified with white tape depending on its size.
NO it is dangerous.
You need a Fish Tape and some wire lube.