2/0 AWG copper wire or 4/0 AWG aluminum or copper-clad aluminum wire for single-phase circuits.If you want to run wires for 100 amp service 150 feet distance, you should get: Run only a kcmil wire for 100 feet or less.For 150 feet or less, use a #4/0 copper.For 100 feet or less, use a #3/0 copper wire.For 50 feet distance or less, use a #2/0 copper wire or #4/0 aluminum wire.The wire material will also determine the wire size for the estimated distance between the meter base and the electrical panel. The maximum voltage drop to be used while deciding the wire size is only 3%. You should know the length of your service line from the meter to the electrical service panel before you decide on the wire size. The distance will decide the wire size of the 100 amp service. While deciding the wire size, you must limit the voltage drop to 3%. If you use aluminum or copper-clad aluminum wires, you need a #2 AWG wire. You must have a #4 AWG wire if you use copper wires. The wire size is different for 100 amp if you use wires with different materials. You will need to use the wire from the breaker panel if the electrical load is quite a long distance.Ī copper wire with 2 AWG would be a good choice.īut, the size changes depending on factors like wire material, distance, voltage drop, phases, etc. The best gauge wire for a 100 amp service should be #2 AWG. What size of wire should I use for 100 amp service? However, some people do not use the 100 amp service because they want to avoid bearing the installation and upgrade costs of their home service. You can use the service for areas with multiple heating appliances, like Fire Stations.Įven small residential locations are ideal, like houses where people use electrical appliances to speed up their lives. You can install a 100 amp service in commercial applications, like large office buildings with multiple air conditioners or in server rooms with many computers. How many wires can you run in a 100 amp service?.What will be the installation charge for the 100 amp service?.What is the wire size of a 100 amp breaker?.What is the conduit size for 100 amp service?.Why is the wire size different for copper and aluminum?.What size of wire should I use for 100 amp service?.If you have any questions please feel free to give us a call at 85 or send an email through our support page. We cut 6 gauge THHN by the foot and offer it in several different colors at a great price! Please click here to view our 6 AWG THHN Building Wire page. We greatly appreciate the photos, Steve, and glad everything worked out for you! Steve buried the 6 AWG THHN copper stranded wire inside a conduit which can be seen below:īuy 6 AWG Wire by the Foot and Cut to Length I needed to run about 95’ of 6awg 240V 50A service from my house panel out to a new woodshop, and being able to get 100’ 6 AWG THHN/THWN spools at a good price from you worked out well!" My loads will be significantly less than that to run various tools individually, as well as a compressor and vacuum. "I put in a 100A box in the new shop, but am only feeding it from a 50A breaker in the main panel from the house service. Steve purchased our 6 AWG THHN/THWN Copper Building Wire for his project. Steve needed to run 50 amp service from his main panel in his home to a 100 amp breaker box (shown below) in his new shop. Our customer Steve, a skilled project engineer sent in these pics from a home project he recently completed. Many of our customers here at Wire & Cable Your Way are looking for electrical wire to service their new backyard woodshop, like this one shown above.
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