Wire size is based on the amperage capacity of the service it is feeding. You tell me the service amps and I can tell you the wire size.
For a 1200 amp service, you should use a copper ground wire of at least 3/0 AWG or an aluminum wire of at least 250 kcmil to meet the National Electrical Code requirements. It's always recommended to consult with a licensed electrician to ensure the proper sizing and installation of the ground wire.
A 3/0 copper conductor with an insulation rating of 90 degrees C is rated at 225 amps.
Up to about 100 ft the size of the wire is determined by the max current and not the distance. A 90 amp supply needs #6 wire. <<>> A #2 copper conductor will limit the voltage drop to 3 percent or less when supplying 90 amps for 75 feet on a three phase 480 volt system.
For a 150 amp service entrance cable, you would typically use 2/0 AWG (American Wire Gauge) copper or 4/0 AWG aluminum cable. This size provides the necessary capacity to handle the electrical load of a 150 amp service. It's recommended to consult with a licensed electrician for specific guidance based on your local electrical code requirements.
Yes, the wire size has to be increased. The existing 100 amp service will now probably have a #3 conductor with an insulation factor of 75 or 90 degrees C which is rated for 100 and 105 amps respectively. Increasing to a 150 amp service will use a #1/0 wire size. If you are thinking of an upgrade, skip the 150 amp service and go to a 200 amp panel. New homes are installing 200 amp 42 circuit panels. The extra cost is only reflected in the materials as the labour costs will be the same regardless whether a 150 amp or a 200 amp panel is installed. The wire size for a 200 amp panel is #3/0. With an insulation factor of 75 or 90 degrees C the rating is 200 or 210 amps respectively.
A #3 copper wire with an insulation factor of 75 and 90 degrees C is rated at 100 and 105 amps respectively.
Wire size is based on the amperage capacity of the service it is feeding. You tell me the service amps and I can tell you the wire size.
For a 1200 amp service, you should use a copper ground wire of at least 3/0 AWG or an aluminum wire of at least 250 kcmil to meet the National Electrical Code requirements. It's always recommended to consult with a licensed electrician to ensure the proper sizing and installation of the ground wire.
A 3/0 copper conductor with an insulation rating of 90 degrees C is rated at 225 amps.
A #3 copper conductor with an insulation rating of 75 or 90 degrees C is rated at 100 and 105 amps respectively.
A #4 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 85 amps.
Up to about 100 ft the size of the wire is determined by the max current and not the distance. A 90 amp supply needs #6 wire. <<>> A #2 copper conductor will limit the voltage drop to 3 percent or less when supplying 90 amps for 75 feet on a three phase 480 volt system.
A #8 aluminium wire with an insulation factor of 90 degrees C is rated at 45 amps.
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).
To calculate voltage drop to size the wire, a voltage must be stated.
For a 150 amp service entrance cable, you would typically use 2/0 AWG (American Wire Gauge) copper or 4/0 AWG aluminum cable. This size provides the necessary capacity to handle the electrical load of a 150 amp service. It's recommended to consult with a licensed electrician for specific guidance based on your local electrical code requirements.