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3.2.12 4 {6 W5 S3 o( O8 T# D7 d; v
Leads (tails) used for the connection to extra low voltage d.c. supply, shall be colour coded red$ z' Z+ H5 E/ N% }
to indicate its intended connection to the positive termination, and shall be colour coded black
5 d& o# v% l2 k( i' @to indicate its intended connection to the negative termination.
3 }' X0 K3 V0 Z, a2 `, N& h/ f6 @
5 J1 @* {5 Q- YFixed terminations, when applied, shall be marked with the "+" sign to indicate the positive connection, and shall be$ N+ R0 o% r2 c% n/ W q v d
marked with the "–" sign to indicate the negative connection.$ J6 Q8 ]5 p& [" V* Q
; r" I; t4 Q) c* ^4 [是否是这个意思? |
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