![]() NEC suggests wire sizes for both copper-based and aluminum-based conductors within the range of 0-2000 volts. So, smaller numbers are for bigger wires and bigger numbers are for smaller ones. The smaller diameter of wires is expressed by large numbers such as 14 AWG is smaller than 12 AWG. Wire sizes are expressed by numerical values opposite to their diameter. With the help of NEC code, anyone can determine the required wire size for a particular appliance and install it safely. NEC determines the wire size required for a particular electrical flow. National Electric Code (NEC) is a standard measurement that has been adopted regionally to ensure the safe installation of electric wires and equipment in the United States. Usually 50 amps are used to power different appliances and they use a 50 amps breaker. It is perfectly suitable for 50 amps as well. A 6-gauge wire can easily handle up to 55 amperages. A 6-gauge wire is best suited for 50 amps of electric flow. Wire sizes determine the amperage flow for sub-panels. It also determines the resistance and weight.Ĭommon sizes of the gauge are 16-, 14-, 12-, 10-, 8-, 6-, 4-, 2-, etc. The gauge determines the amount of current to be carried. The electrical current carrying capacity of a wire depends on its gauge size. It means smaller sized gauge is characterized by larger numbers and vice versa. Gauge is rated with numbers that are opposite to its measurement. ![]() ![]() It refers to the physical size of the wire. Gauge:Ī wire gauge is used to measure the diameter of a wire. However, ampacity is measured by ampere or amps and refers to a conductor’s maximum capacity of carrying current under normal usage conditions. So the capacity of carrying current gets limited. With the increasing temperature, the resistance of the conductor increases. Temperature plays a vital role in determining the ampacity of a conductor. ![]() The flow of current should not exceed the temperature limit. ![]()
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