The wire size for 600 amps on a single wire 1250 MCM. A 1250 MCM copper conductor is rated for 645 amps with an insulation rating of 90 degrees C. This size of wire is too large to handle easily when it comes to the terminations. A service requiring 600 amps is usually paralleled or tripled which reduces the wire size which makes the wire much easier to handle. For a parallel service two 350 MCM cables are used and for a triple parallel run three 2/0 conductors are used. These conductors all have an insulation rating of 90 degrees C.
A 1250 MCM copper wire with an insulation factor of 90 degrees C is rated at 645 amps.
A 1500 MCM copper wire with an insulation factor of 75 degrees C is rated at 625 amps.
It depends on a few things:
1. What type of conductor e.g aluminium, copper etc
2. Length of conductor required
3. Aloowable voltage drop. usually 4%
3/0wire
wire is often rated at 600 vac, 22 amps reqires # 10
30,60,100,200,400 and 600 amp
From the question it is hard to establish whether the service size is 350 amps or the service conductors are 350 MCM in parallel. If the service is 350 amps, the grounding conductor is #3 bare copper wire. Parallel 350 MCM conductors will allow for a 600 amp service. The grounding conductor for a 600 amp service is a #1 bare copper wire.
The wire size used in a service entrance distribution panel is governed by the size of the services over current device. The larger the service, the larger the fault current could be, the larger the ground wire to carry the fault current to ground. If the largest service conductor carries 100 amps use a #8, 200 amps - #6, 400 amps - #3, 600 amps - #1, 800 amps - 1/0 and over 800 amps - 2/0 for the ground wire. <<>> Golden Valley Electric Assoc. in Alaska requires #4AWG copper wire for a ground from the breaker box to earth ground rod. The same goes from the service entrance panel on the pole.
The only thing you need to know in order to size your wire is the "5.1 amp" amount.Figure on the motor drawing double on startup, so say, 10 amps, or so.18 gauge wire would pack your 5.1 amps just fine, but it is a little flimsy . . . I would use 16 gauge, instead.Of course, the insulation on the wire you select should be rated for 600 volts or more.
wire is often rated at 600 vac, 22 amps reqires # 10
30,60,100,200,400 and 600 amp
Ground is sized based on the size of the feeder wire and not the amps of the service! However, for a 600 amp service 1500MCM copper wire is one option (NEC 310.16) ;therefor, ground wire is 3/O copper (NEC 250.66) or another option is a two sets of 350 MCM copper wire then a #2 copper (since the biggest feeder wire is 350MCM).
From the question it is hard to establish whether the service size is 350 amps or the service conductors are 350 MCM in parallel. If the service is 350 amps, the grounding conductor is #3 bare copper wire. Parallel 350 MCM conductors will allow for a 600 amp service. The grounding conductor for a 600 amp service is a #1 bare copper wire.
There are different combination to obtain a current capacity of 1250 amps. A parallel run of #1250 MCM wires. A triple run of #600 MCM wire. The most flexible run would be with a quad run of #350 MCM wire.
The wire size used in a service entrance distribution panel is governed by the size of the services over current device. The larger the service, the larger the fault current could be, the larger the ground wire to carry the fault current to ground. If the largest service conductor carries 100 amps use a #8, 200 amps - #6, 400 amps - #3, 600 amps - #1, 800 amps - 1/0 and over 800 amps - 2/0 for the ground wire. <<>> Golden Valley Electric Assoc. in Alaska requires #4AWG copper wire for a ground from the breaker box to earth ground rod. The same goes from the service entrance panel on the pole.
There is no one wire that is rated for 1800 amps. The service will have to be a quad parallel of the conductors. A 600 MCM conductor with an insulation factor of 90 degrees C is rated at 475 amps. This conductor paralleled into four equal lengths will give an ampacity of 1900 amps for each leg of the service.
Group 34, about 600 cold cranking amps.Group 34, about 600 cold cranking amps.
The only thing you need to know in order to size your wire is the "5.1 amp" amount.Figure on the motor drawing double on startup, so say, 10 amps, or so.18 gauge wire would pack your 5.1 amps just fine, but it is a little flimsy . . . I would use 16 gauge, instead.Of course, the insulation on the wire you select should be rated for 600 volts or more.
Group 34 Approx 600 cold crank ampsGroup 34 Approx 600 cold crank amps
Group 34, 600 amps
This is a voltage drop question. A 500 MCM copper or 750 MCM aluminium conductor will limit the voltage drop to 3% or less when supplying 300 amps for 500 feet on a 240 volt system. Paralleling these conductors will allow the rating to be increased to 600 amps.