Raceway Calculation

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 Question by johnson jaikumar posted 19 Jul 2005
 Raceway Calculation
how many cat5e cables can be layed in a
300 X 50 mm raceway with some buffer
 Answer by Joseph Golan posted 23 Jul 2005
Dear johnson,

I typically use the 40% rule for raceways with 3 or more cables

Calculate the area of the raceway: l x w = A
Multiply the result by 40%, the result is the usable space for round cables.

Calculate the area of your cable: Pi(r)Sq = A

Divide the usable space of the raceway by the result of the second formula for the number of cable that will fit (drop any fractional remainder)

Joseph Golan, RCDD

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