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The resistance of copper wire is approximately 1 Ω / 1000 ft for 10 AWG, 10 Ω / 1000 ft for 20 AWG, 100 Ω / 1000 ft for 30 AWG, and so on. [5]: 27 For an arbitrary gauge n, it's approximately 10 n/10 Ω per 10 000 ft.
An extended specification, THWN-2 permits use in wet locations and conductor temperatures up to 90°C simultaneously. [ 18 ] There are additional restrictions on such wire's use not mentioned here (for example, neither THHN nor THWN may be exposed to sunlight, or directly buried in the ground [ 20 ] ); see the NEC for details.
White: 14 AWG wire (2.08 mm 2) for 15-amp circuits Yellow: 12 AWG wire (3.31 mm 2) for 20-amp circuits Orange: 10 AWG wire (5.26 mm 2) for 30-amp circuits Black: 6 or 8 AWG wire (13.3 mm 2 or 8.37 mm 2) for 60- and 45-amp circuits, respectively Grey: usage for underground installations, designated as "underground feeder" (UF) cables [4]
Also, the size of the aluminum wire needs to be larger compared to copper wire used for the same circuit due to the increased resistance of the aluminum alloys. For example, a 15 A branch circuit supplying standard lighting fixtures can be installed with either #14 AWG copper building wire or #12 AWG aluminum building wire according to the NEC ...
The maximum length for a cable segment is 100 meters (330 ft) per TIA/EIA 568-5-A. [31] If longer runs are required, the use of active hardware such as a repeater or switch is necessary. [ 32 ] [ 33 ] The specifications for 10BASE-T networking specify a 100-meter length between active devices. [ 34 ]
President-elect Donald Trump will sign 11 border-related executive orders, including one authorizing the deployment of U.S. troops to the border, a Fox News reporter said in a post on X on Monday.