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请参考4.14.2 The mass of the luminaire suspended by flexible cables or cords shall not exceed 5 kg.
- Z0 g6 E- N+ N: O( O2 p' EThe total nominal cross-sectional area of the conductors of flexible cables or cords suspending
4 a+ G7 `- b I/ b; V* y( @pendants shall be such that the stress in the conductors does not exceed 15 N/mm2.
) m/ n: `5 q Y& u& M6 a! X ~For the calculation of the stress, only the conductors are considered. r c; Y3 @( y$ T* D5 w# }1 w
Where a luminaire of mass greater than 5 kg is intended to be suspended, the design of the
. F7 c" ?+ i) c Z8 r" ^$ L3 V# K4 }luminaire or of the flexible cable or cord shall be such as to prevent any tension being applied
`& d" ^3 c3 I" d- t! tto the conductors." W& b$ @+ @: e* C
NOTE 1 This requirement can be met by using a cable which incorporates suitable load-carrying cores. |
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