Convert 3 phase into 3 single phases

[pc1966]

OK if you are using a TT arrangement then you need not worry about the armour resistance as it is plenty low enough for the upstream RCD to clear a cable fault.

 

[Astolat]

Hi there,
I have currently started working on a farm and they are having a new 100a 3 phase supply installed.
This is being terminated in an external enclosure. They then want to carry this 3 phase 150 meters to a barn and at this point split it into 3 single phase supplies. Is this even possible?
Surly the return on the neutral would have to be capable of carrying 300a if they are split to 3 seperate phases there would be the potential for 300a to flow back down the neutral. I know in 3 phase balanced loads in theory there should be nothing flowing back down the neutral but this can't be the case if they are then split to 3 single phases.
Just after some theory to fill in a blank space iv never had explained to me. Thankyou

I would get the DNO to put the 3 phase supply a lot nearer to the load.