A #4 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 85 amps.
A #3 copper wire with insulation rating of 90 degrees C has an amperage rating of 105 amps.
#6 bare copper wire.
#6 wire is needed. If placing the subpanel in a garage at a good distance, it is recommended to also install a seperate ground rod .
3/0 copper wire with 90 degree insulation is rated at 210 amps. 75 degree insulation is rated at 200 amps.
The wires can be as long as they need to be to make the connection. It is a fact that as the length of the wires are increased, the size of the wire also has to be increased, to over come the voltage drop due to the internal resistance of the wire. A 3/0 copper conductor with an insulation factor of 90 degrees C is rated at 210 amps. This is the normal size for a 200 amp service. If the service is further away, then the increasing of the wire size starts at 3/0.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
For a 200amp service you need number 4 copper
#6 bare copper wire.
200 amp service in chicago uses 3 aught.
You do not use a ground wire in the connection from the meter base to the distribution panel. A bonding wire may be required if the service is using PVC conduit.
#6 wire is needed. If placing the subpanel in a garage at a good distance, it is recommended to also install a seperate ground rod .
3/0 copper wire with 90 degree insulation is rated at 210 amps. 75 degree insulation is rated at 200 amps.
The wire is sized to the breaker in the main box that is feeding the subpanel. The calculations for the subpanel is based on what devices will use the subpanel and an estimate of duty factors for the devices. An electrician can provide this information, or you can look on-line in the National Electric Code for estimation methods.
The wires can be as long as they need to be to make the connection. It is a fact that as the length of the wires are increased, the size of the wire also has to be increased, to over come the voltage drop due to the internal resistance of the wire. A 3/0 copper conductor with an insulation factor of 90 degrees C is rated at 210 amps. This is the normal size for a 200 amp service. If the service is further away, then the increasing of the wire size starts at 3/0.
Assuming it's 240 volts and a 5% voltage drop is acceptable, the resistance of the cable must be less than 12/120 or 0.1 ohms. That is a resistance per ft of 0.1/1200 or 0.0000833 ohms/ft, or 0.0833 ohms per kft. The cable size is 00 or 2/0
Each hot leg to the neutral wire of the service has the ampacity of 200 amps, that is why 3/0 wire is required. A 3/0 copper wire with an insulation factor of 90 degrees C is rated at 210 amps.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
# 6 copper wire.