electricalforum.nz

I have 300mm² parallel conductors that I need to split across two ducts

Just confirming there is no issue with this and what the best solution/split is?

Haven't dealt with this so curious of information and references

My thoughts are 2 phases in one and 1 phase + Ns in the other and believe this to be fine but just double checking

I would’ve thought L1, L2, L3 + N in each duct would be the way to go?

I remember doing this years ago and arranging them like this, the same as cable tying the conductors in trefoil on cable tray.

I think they get arranged like this to cancel out the magnetic fields or something, although I’m not 100% sure.

Have a look at appendix D in the back of ASNZS3008.1.2:2017

Agree one complete set per duct is preferable

Thank you, I was just thinking in terms of them being parallel and keeping each parallel pair together to keep them as close as possible in length

But thanks team, will look into it