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大部分标准只显示18AWG 以上的(比如UL507,但其也是摘录NFPA 70),所以等待高手提供22AWG以下的载流量的标准依据,也许是大部分产品的内部引线都有标准规定不低于AWG及其长度的限值,所以可以承受比较大的电流,而对于电源线则需要根据产品的额定参数来选择对应的AWG。2 N1 P7 | N0 K; i
' \- k* [* ?" O( d8 sNFPA 70 National Electrical Code 都查不到24AWG与22AWG的载流量,可参考以下:
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*Tinsel cord.6 i( N4 g0 E3 ]. s) I- v4 t! P4 _/ l: A
**Elevator cables only.6 L: S% B @* K. f& c- |
***7 amperes for elevator cables only; 2 amperes for other types.0 s- \& }& j5 K
+The allowable currents under Column A apply to 3-conductor cords and other multiconductor cords
2 u3 J' z; ~) t. M' Xconnected to utilization equipment so that only 3 conductors are current-carrying. The allowable currents4 @0 y6 U$ _( S) y# Y
under Column B apply to 2-conductor cords and other multiconductor cords connected to utilization equipment8 J& J. N6 h5 M8 W0 \$ Z
so that only 2 conductors are current carrying.
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