Make sure to read two of our other resources on Thermo King alarm codes and an in-depth look at welding gas or welding glasses. Other countries use the Imperial Standard, defined by the British Board of Trade. The United States and 65 other countries use the AWG as the unit of measure. So before deciding which to buy, consider how much electrical current it can handle by identifying the devices you will use. Using an incorrect one could lead to serious problems in the long run. Getting the right diameter is important because it determines the maximum current it can safely handle. If it is not written on the product itself or is unclear, you can use a thickness tool to determine it. It means the higher the number, the smaller the diameter. It is inversely proportional to the diameter. You could also come across gauges like 1/0, 2/0, and 3/0. 6 and 4 are just some of the numbers you’ll encounter. Instead of referring to its actual thickness, people use its gauge. If you have ever been to the electrical section of a hardware store, you will notice it comes in several options. This determines how much electrical current it can safely carry. The gauge is the diameter of the product. Scroll down further if you need the wire size for 200, 300, 400, or 600 amps. We have the right wire size for you if you need something more substantial, like 100, 125, or 150 amps. Full wire size chart for 70, 80, 100, 125, 150, 200, 300, 400, & 600 ampĬheck the chart below to find the right wire size for 70 or 80 amps. The right wire size for 600 amp service is at least 1500 kcmil assuming a temperature of 167☏ for the conductor. Take a look at the NEC electrical cable chart below. In contrast, a copper 600 kcmil can handle that amount of power. The right 400 amp wire size requires an aluminum wire size of 1000 kcmil. $2,425.49 Buy on Amazon 300 amp wire sizeįor 300 amp service, you will want copper wire size 500 kcmil to handle the load. For a circuit breaker with this rating, you can use 4- gauge copper at an ambient temperature of 140☏. The requirement depends on whether aluminum or copper is used and the ambient temperature. That is, assuming there aren’t other factors impacting the performance. 70 amp wire sizeįor 70 amps, the right wire size is either a gauge 3 aluminum or a gauge 4 copper. Simply take a look at the chart further down the page. The 8- gauge nor the 10- gauge can be coupled with this breaker. You want to know if you can use these with the circuit breaker. Let’s say you have an 8- gauge and a 10-rated lying a round at home. That is assuming the right conditions, such as temperature. If you’re more cautious, a 4 AWG is great. Here are all the products we recommend based on NEC’s ampacity chart to ensure safety. We’ve got you covered if you want to buy a circuit breaker or a sub-panel. For 600 amp, you will need a 1500 kcmil- gauge wire size. For a 400 amp service, you will need a 600 kcmil-gauge copper wire size. For a 200 amp service, you will need a 250 kcmil-gauge copper wire size. For 150 amp, you will need a 1/0- size copper wire size. For an 80 amp, you need a 4- gauge copper wire size. For a 100 amp service, you will need a 1- gauge wire size.įor 125 amps, you will need a 1- gauge copper wire size. What electrical components do I need for a project? The rule of thumb that techs will usually go by is that for a 70 amp circuit breaker, 4-gauge copper wire is the right size to go with. If this is your first time reading about the topic, we cover some basic things to know about it. Knowing which size to pick is important, so you can use the right one for your equipment that requires electricity.
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