UF-B cable is used for underground service and as a direct burial cable.Type MC cable has a protective armor and can be used without conduit.Make sure to choose the cable with a suitable size of a ground wire. Copper SER is a popular choice for panels and subpanels.USE-2 RHH RHW-2 can be used for underground service entrance applications.THHN/THWN-2 and XHHW-XHHW-2 are used in conduit.The last one is suitable for underground service. Types of Copper Wire For 100-amp Service PanelsĬommon types of copper wire used in 100 Amp service are THHN/THWN-2, USE-2 RHH RHW-2, XHHW, type MC cable, copper SER cable, and UF-B cable. For commercial applications, flame-retardant, plenum or riser-rated, and low-smoke zero halogen cables should be used. Both are perfectly fine to use in these panels. Wires Used in 100 Amp service are different depending on whether it is copper or aluminum wire. In general, a 100 AMP service is very common, and you can find a 100 amps sub panel everywhere. 100 Amp service may also be used to feed different subpanels and circuit breaker panels in residential, commercial, and industrial buildings. Other basic applications of a 100 amp service panel are detached garages, workshops, agricultural facilities, and temporary power at the construction sites. 100 Amp service is not good for houses over 3,000 square feet with central air conditioning or electric heat. In these houses, 150 amp and 200 amp services are more common. While 100-amp service is enough for such homes, it is not common for larger houses with the combination of electric and gas appliances and high-power demand. It is quite standard for older homes that have a limited number of appliances. Is 100 amp service enough for your home? The answer depends on the size of your home and your appliances.Ī 100-Amp service panel is typical for mid-size private houses and apartments with several 240-volt appliances and basic air conditioning. You would typically use 8 AWG copper grounding wire or 6 AWG aluminum grounding wire. The ground wire size for 100 Amp service is different. If the run of the wire is significantly long, such as over 100 feet, you should use a larger size out of the sizes described above to accommodate for voltage drop. When choosing 100 amp service wire size, remember that a 100 amp circuit at 240V can proceed up to 24,000W of electricity. These sizes are also used for direct burial. Typical sizes of wires for 100 Amp Service are 4 AWG or 2 AWG for copper wiring and 2 AWG, 1 AWG, or 1/0 AWG for aluminum or copper-clad wiring. Options include THHN, XHHW, UF-B, USE, and SER. 36 instead of an even 5 mils.One of the most common questions wire and cable buyers ask is: Which wire gauge to use for 100 amp service, and which type of cable to choose? The truth is that you can use many types of copper and aluminum wire in a 100-amp service. Number from the next greater finally gives us 5.000 000 02 mils as the diameter Using this ratio and deriving the size of each The ratio of the diameter of any one size to that of the next 36 which is 5 mils, the diameters of the sizes B. 0000, which is 460 mils in diameter,Īnd No. Since that time the wisdom of the change has been proved throughout its continued use, especially for the users of electrical conductors, in which service the carrying capacity of the wire varying as the area is the most important point to be determined.Ĭonductors for Electrical Ditribution. The advantage of such a system was at once seen by the brass manufacturers, and the gauge then proposed was adopted by them. In constructing this gauge it was at once seen by the Brown & Sharpe Company that there was a great lack of uniformity in the variations between the different sizes and numbers used in this system, and consequently Brown & Sharpe recommended to the association that they adopt a gauge the numbers of which would correspond to areas varying in geometrical progression. During that year the Association of Brass Wire and Sheet Manufacturers requested the firm of Brown & Sharpe to make a number of “V” gauges numbered according to the Birmingham system, which they intended to adopt as their standard. This Birmingham wire-gauge formed the basis for most of the gauge numbers adopted by the American wire manufacturers with certain minor changes introduced by individual manufacturers, and up to the year 1857 this system continued with its consequent confusion and variations of size. The first effort toward uniformity was made by the wire manufacturers around Birmingham, England, who adopted a set of gauge numbers called the “Old English Wire-gauge,” which was subsequently changed to the Birmingham Wire-gauge. Both (not suitable for smartphones) Properties of Bare Copper Wire Gauge
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