Avoiding grouping factors in trunking

[trebor]

I need some guidance on circuits in trunking, assuming ive got 12 single phase circuits in singles 75% loaded in metal trunking say 100x100

My question is as the conductors lie in the bottom of of the trunking I will need to make allowances for grouping, is ther anything on the market where circuits can be supported spaced from each other, I have not used metal trunking for years

 

[telectrix]

ain't gravity a bitch? not sure if you can get divided metal trunking, like the plastic where you segregate elv.

 

[rmc86uk]

what about multi compartment trunking?

Sent from my HTC Desire using Tapatalk

 

[Sparky Ninja]

what's the problem with grouping factors?

 

[Sintra]

It's the spacing factor that's most important.


Sent from my iPhone using Tapatalk.

 

[ian.settle1]

It's the spacing factor that's most important.


Sent from my iPhone using Tapatalk.

Don't forget grouping factors will mean the more circuits you have the bigger the CSA for each circuit.

 

[Sparky Ninja]

maybe if the op gave us a cable size we could actually come to some kinda point to this?

Can't select a cable factor without a CSA.