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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]
A lower rating will apply if multiple conductors are in proximity, since each contributes heat to the others and diminishes the amount of external cooling of the conductors. Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75, and 90 °C, often with an ambient air ...
Wire that is approved to BS 6231 might not carry the UL and CSA ratings, if, for example, the wire is not suitable for use at the higher 105 °C temperature that is specified for those ratings. In that case, the wire is not tri-rated. According to UL 758, the maximum operating temperature of tri-rated cable is 105 °C. British Standard BS 6231 ...
The standard includes preferred current ratings and wire gauges for both International (deemed Series I) and North American (deemed Series II) applications. Series I preferred current ratings (in amps) are: 16, 32, 63, 125, 250, 400, 630 and 800, with wire gauges specified as mm 2.
'Twin and Earth' electrical cable to British Standard 6004, with twin 6 mm² conductors and uninsulated 2.5 mm² earth continuity conductor. Twin and earth (often written "T&E" and sometimes "T and E") cable is a colloquial name in the UK, Australia, New Zealand and other countries for a type of flat sheathed fixed mains electricity cable, containing two insulated current-carrying conductors ...
6: 540: 150: 200: 400 7: 810-300: 600 8: 1215-450: 900 9: 2250-800: 1600 See also. Contactor; Motor starter; References This page was last edited on 20 June 2020, at ...
5 Sizes and ratings. Toggle Sizes and ratings subsection. 5.1 375 series. 5.2 312 series. 5.3 250 series. 5.4 205 series. ... the AMP Universal Handle. [citation needed]
Accordingly, one pound of aluminum has the same current carrying capacity as two pounds of copper. [3] Since copper costs about four times as much as aluminum by weight (roughly US$4 /lb [ 5 ] vs. US$1 /lb [ 6 ] as of 2024 [update] ), aluminum wires are one-eighth the cost of copper wire of the same conductivity.