Couple of things wrong here. 30 isn't a wire size. If you mean a wire that can carry 30 amps that would be # 10. Now it depends on how many # 10 wires you want to put into a conduit that governs the size of the conduit.
10 guage
copper wire diameter,length and numbers of turns for 20 micro Henry inductance and 1600 Amp current
can use 400mm THW,RHW,RUH (rating: 400mm = 388amperes)
475 amps, per NEC 310-16. Note that this is a maximum; there are many reasons to derate the current carrying capacity of the wire.
The nearest AWG wire size to 50 sq. mm is 1/0. A 1/0 aluminium conductor with an insulation factor of 75 or 90 degrees C is rated at 180 and 205 amps respectively.
AWG # 6 copper
A # 14 copper conductor will be fine to carry 8 amps at 120 volts. This size conductor is rated at 15 amps.
# 4 copper wire short distance.
#8 RW 90 degree wire
You would need to use a wire size that is rated for at least 40 amps to be safe and to meet the requirements of the air conditioner. A common wire size for this application would be 8 AWG copper wire, which is rated for 40 amps.
The number of automotive amps a 30-foot strand of copper wire can carry depends on the gauge (thickness) of the wire. For example, a 30-foot strand of 10-gauge copper wire can typically carry up to 40-50 amps for automotive use, while a 30-foot strand of 12-gauge wire might be limited to around 25-30 amps. It's important to consult wire ampacity tables and consider factors like temperature and voltage drop to ensure safe and effective performance.
If you mean 2/0 copper wire it is rated 175 amps. # 2 wire is 115 amps. If you are referring to 2.0 metric it is rated 15 amps.
Service wire required is AWG # 3/0 copper.
# 8 RW90
14
Sorry, there is no such wire size as "30 gauge" in the AWG (American Wire Gauge) system. For the ampacity rating of all standard conductor sizes, go to Table 310-16 of the National Electric Code. If you mean what wire size will carry 30 amps then a #10 copper wire insulation rating of 90 degree C is rated at 30 amps.
10 amps