Cable Tray Rung Spacing
Cable Tray Rung Spacing
(OP)
Dear Friends,
Is there a formula to calculate the ladder type cable tray
rung spacing?
I know that they come in 6"-9"-12"-24" spacing and 12" is most popular;however what is the rule of tumb or formula that is used for this purpose?
Any feedback is apprceited.
Is there a formula to calculate the ladder type cable tray
rung spacing?
I know that they come in 6"-9"-12"-24" spacing and 12" is most popular;however what is the rule of tumb or formula that is used for this purpose?
Any feedback is apprceited.






RE: Cable Tray Rung Spacing
ht
RE: Cable Tray Rung Spacing
Don
RE: Cable Tray Rung Spacing
For practical consideration, single conductors #1/0 to #4/0 may only be installed where the rung space is 9" or less. See [NEC 2005]392.3(B)(1)(a). Otherwise I know of no particular restrictions.
RE: Cable Tray Rung Spacing
h
18" spacing may not be available from all manufacturers.
yours