3 phase sockets radial circuit

[sparky147]

I need to install 4x 3 phase sockets and as i havent got much room on the consumer unit, i was wondering if its possible to install all 4 sockets on a radial circuit with a 32amp MCB using 4mm cable running no more than 15 meters. The 4 machines that are going to be plugged in are 2x 6amp and 2x 8amp, also each socket will be protected by its own RCD. The reason im asking is all 3 phase sockets i have come a cross have there own MCB, but as the machines that are going to be plugged in are low amps i was wondering if it was possible, many thanks.​

 

[RWJ]

Didn't we have this debate last week???

I'll try and find it http://www.electriciansforums.net/commercial-industrial-electrical/32131-3-phase-circuit.html

Although I assume your not talking 32a Sockets?!?

 

[sparky147]

No its my first post

 

[RWJ]

No its my first post

I didn't mean you've posted before I meant it was covered in a previous post which I didn't know if you'd read or was of use

 

[sparky147]

Sorry just looked at the post and other posts, some say its ok and some say its not i was thinking it would be ok as i know whats beeing plugged in the 3 phase sockets

 

[RWJ]

It's sounds feasible, your not pulling that much.

What are the machines, could you run in to problems if one takes out the MCB?

 

[sparky147]

2x heat sealing machines and 2 x mixing machines, i work for the company im installing the 3 phase sockets for so if there is ever a problem im there to sort it out, just worried its agenst regulations as i do every thing by the book, what i could do is split it into 2 circuits, using a different board but my company wants to save as much money as possible.

 

[Deleted member 26818]

This is no different from installing a Radial in a domestic.
To be honest, I'd consider making it a ring.
Wondering why you intend using RCDs?

 

[sparky147]

Exra protection plus alot of people who work at the company i work for dont treat the equipment with any respect what so ever. Also its in a area where water is being used as i said before no respect for the equipment.

 

[Deleted member 26818]

As you are going to individually RCD protect each socket-outlet, it might be an idea to use RCBOs rated to each machine.

 

[RWJ]

As you are going to individually RCD protect each socket-outlet, it might be an idea to use RCBOs rated to each machine.

As above ^^^^^^^^^^^^^^^, was going to add that

 

[netblindpaul]

What would be the consequences of a single machine taking out the whole supply in financial lost material and lost production terms, this will give you a better idea of your route, if it is significant then it would be in breach of the regs.
There is one...