Answer / raju

Cable tray size must be double of the cable diameter.for
example, three cables(4c/95sqmm,4c/70sqmm,4c/50sqmm)are
traveling in a corridor,...the diameter of
95sqmm-41.7mm,70sqmm-37.7,50sqmm-32. then the total diameter
of the cables are 111.4. for this total diameter, the size
of the cable tray should be double of the total
diameter,.i.e 225mm cable tray can be use.

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