Three phase socket wiring.

[threephase123]

Hi could anyone tell me if the wiring diagrams below are the corect way to wire three phase socket outlets. 5 pin and 4 pin.

Thanks

 

[threephase123]

Why has this been moved? To student learning?

 

[Doc Hudson]

Looking at the drawings attached to the opening post, would imply its either student or DIY, as most DIY is single phase, student appears the most appropriate location. Unless we are suggesting that qualified electricians have difficulty with L1 to L1, L2 to L2, L3 to L3, E to E (and N to N if appropriate).

Doc H.

 

[Andy™]

Why has this been moved? To student learning?

because if your not a student & learning, then you should be calling an electrician who knows how to wire a socket to do the job for you

 

[threephase123]

So this is not how a single 3 phase socket would be wired from an isolator? I just wanted a simple yes no answer? Not to be patrionised. Could you start again?

 

[Andy™]

yes. although the actual pin layout is different

 

[threephase123]

Ok thanks. Can you run radials on 3 phases or do they have to be on their own isolator for each socket

 

[Andy™]

even if they had their own isolator, they would be wired as radials. they dont always need an isolator though

 

[threephase123]

By isolator, I mean an MCB. Do they have to be fed from different MCB's or can they be wired as radials

 

[Andy™]

By isolator, I mean an MCB. Do they have to be fed from different MCB's or can they be wired as radials

they will always be wired as radials. unles you want to do some weird thing of wiring them as a ring

 

[threephase123]

I have heard that sometimes there can be problems with getting 2 conductors into the connections? Is that right

 

[sparkytim]

It is good practice to run EACH socket as a SEPARATE radial from its own MCB.

 

[threephase123]

Thats what I thought and was asking. Thanks for that really appreciate it!

---------- Post Auto-Merged at 17:20 ---------- Previous post was made at 17:17 ----------

What if you needed to put say 20 3 phase sockets in? Would you still be required to put them on their own individual MCB's so 20 MCB'S? Damn that would take up 2 boards or even more?

 

[sparkytim]

If you NEEDED 20 sockets then so be it

 

[threephase123]

What about lighting circuits are these taken off a 1 phase from the three phases? I take it you can't get 3 phase lighting?

 

[sparkytim]

Each lighting circuit is taken from a single phase MCB. You can have several lighting circuits each from a different phase to balance the load as equally as possible over the 3 Phases.

 

[Andy™]

I have heard that sometimes there can be problems with getting 2 conductors into the connections? Is that right

depends on the manufacturer & what size cable you are using. sometimes easily done, sometimes not so easily done, sometimes cant be done

 

[Manator]

Most 3 phase sockets have large terminals for cables, however in older factories where distribution is some distance away volt drop means larger csa of cables and sometimes it can be a right pain getting two cables into one terminal.

 

[NozSpark]

IMHO it would be good practice to have an isolator before every socket (or an switched interlinked socket), this would also make it easier to terminate your cables

 

[steptoe]

has the OP been with mr smith and sidewinder for a short sojourn?