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About RF Cafe
Copyright: 1996 - 2024 BSEE - KB3UON RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived... All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowl My Hobby Website: |
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Current-Carrying Capacity of Wire
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Radio-Craft magazine used to run a feature where readers would write in with questions, and someone on the staff would respond. This month's query requested a table containing current carrying capacities for various wire gauge sizes. Values of fusing current were provided for 10 through 40 GA, for copper, German silver, and iron. The "B. & S. Gauge" wire size scale refers to Brown & Sharpe, which now goes by the designation of American Wire Gauge (AWG). Current-Carrying Capacity of Wire(313) Mr. L. L. Sander, Los Angeles, Calif. (Q.) I should be glad if you would tell me where a chart showing current-carrying capacity of wires of various gauges can be obtained. (A.) Since a wire will pass current until it fuses, we print herewith an interesting chart (courtesy of General Electric Supply Company) showing current necessary to fuse wires of different gauges and materials. Note that a No. 40 copper wire will actually take over 1.5 amps. without fusing!
Current Required to Fuse Wires, Copper, German Silver, and Iron
Posted October 10, 2016 |
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