![]() ![]() Technically speaking, the distance cannot change a wire’s amp rating. Things To Consider To Choose Perfect Ground Wire Size For 100-Amp Service 1). The ground wire can be smaller or bigger than the neutral and hot wires. But what if you prefer 3AWG or 2AWG? What if you’ve decided to apply the same gauge to the hot, neutral, and ground wiring? That is perfectly acceptable. This is why you can also use 8AWG and 6AWG. As such, even if the current exceeds the capacity of the ground wire, it won’t transmit that current long enough to overheat. Most people go an entire year without recording a surge.īut even if a surge occurs, ground wires carry electricity for a fraction of a moment before the breaker trips. First of all, it only carries electricity when a surge occurs. You can make the ground wire smaller without endangering your home. Surprisingly, the ground wire’s size doesn’t have to mimic the gauge of the neutral and hot wires. Although, 4AWG wire is also adequate if the distance between the panel and load is less than 50 feet.ĭoes that mean every home with a 100 amp service requires a 4 – 2AWG ground wire? Not necessarily. In other words, you wouldn’t be wrong in assigning 3 and 2AWG lines to a 100 amp service. The neutral wire takes that same power back, and the ground line will lead any excess current to the earth in the event of a surge.ģ and 2-gauge wiring can withstand 100 or more amps. After all, the hot wire carries the power from the panel. Hot/Neutral VS GroundĬommon sense will tell you that the hot, neutral, and ground conductors should be the same size. And the distance influences the wire size. This matters because the location of the subpanel affects the distance the wires have to cover. They can also extend your home or commercial building’s electrical service to a structure in the vicinity. People use subpanels to accommodate new circuits. If someone wants you to install a grounding wire for their 100 amp service, it is probably a sub-panel. ![]() While 100A can work, don’t be surprised if you occasionally overload your system. However, 200A is sufficient for your basic needs. Larger houses may prioritize 250-amp services. 200A is the standard, especially for conventional homes with kitchen and laundry appliances, not to mention heating and cooling units. Subpanelįirst of all, you rarely see 100-amp services in residential settings. If you’re a layperson, you will take several considerations into account before answering this question, including: 1). The size of ground wire for 100 amp service is 8AWG or 6AWG. But what is the correct ground wire size for a 100 amp service? This guide will tell you. You can’t trust these cables to protect you unless you secure the right size. My experence in this is I would go with direct burial cable minimum of 3/0 AL reason for a AL as opposed to copper is if if starts to fault copper will keep working and also send power into the ground without you knowing before it faults where AL will just burn through and you will know it now, I also would suggest to put it in pipe that way if ever built or paved over all you need to do if it goes bad is pull it out and back in and with 3/0 AL you have the ability to go up to 200 amp service down the road just my thoughts good luck.Ground wires are indispensable because they provide an alternative path for excess current during an emergency. Aluminum wire loses a lot of conductivity relatively quickly.especially if it gets water in it. Go with 2/0, 2/0, 2/0.and you'll never regret it. UD triplex, Or go with 2/0 2/0 2/0 #4 that UD quad, That quad will carry a. Posted 21:27 (#2968099 - in reply to #2967911) Subject: Re: Wire size for 100 amp serviceĪt that distance I would use 2/0 2/0 2/0. Any other building 2AL will need to be fused at 90 amps.Ĭheck Voltage drop tables to see if you need to increase the size of the wire to compensate for Voltage drop Minimum size for dwelling (house ) is 2 AL to serve 100 amps. How many volts, copper or aluminum, is it single phase? I work for a power co and we would use 1/0 2 1/0 aluminum in a flexible conduit. Only going to pull Lights small hand tools and maybe a small welder. I need to pull a line to a tractor shed about 150 feet. ![]() Posted 20:20 (#2967911) Subject: Wire size for 100 amp service Wire size for 100 amp service Jump to page : 1 Now viewing page 1
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