labelling 3 phase board

[Roger]

What's the norm ? have a site with 5 off 3 phase distribution boards some 6 and 8 and a couple of 12 ways.Every one is labelled differently.I have just put a new Wylex board in and it starts bottom left column as number 1,L3 1,L2 1,L1 then right bottom number 2,L3 2,L2 2,L1 then going up number 3 is on the left column,4 on the right.
All other boards are just numbered all over the place,top to bottom and bottom to top in single number .Boards have 3 phase breakers labelled ie 22,23,24 for another board or machine but this should be a one number and L3,L2,L1 or R,Y,B.

What's best practice ? is there a reg ? so many circuits are unknown it would make sense to start fresh and get it right.

Time to play on excel me thinks.

As always advice welcome.

 

[IQ Electrical]

What's the norm ? have a site with 5 off 3 phase distribution boards some 6 and 8 and a couple of 12 ways.Every one is labelled differently.I have just put a new Wylex board in and it starts bottom left column as number 1,L3 1,L2 1,L1 then right bottom number 2,L3 2,L2 2,L1 then going up number 3 is on the left column,4 on the right.
All other boards are just numbered all over the place,top to bottom and bottom to top in single number .Boards have 3 phase breakers labelled ie 22,23,24 for another board or machine but this should be a one number and L3,L2,L1 or R,Y,B.

What's best practice ? is there a reg ? so many circuits are unknown it would make sense to start fresh and get it right.

Time to play on excel me thinks.

As always advice welcome.

I number like this:

1/L1 3/L1
1/L2 3/L2
1/L3 3/L3
2/L1 4/L1
2/L2 4/L2
2/L3 4/L3

If on a periodic inspection, I change all numbering to that format.

 

[Amp David]

Same here, unless every socket, isolator etc are marked with which DB and way there fed from

 

[Superspark23]

I label each one the same as above you would read a book like that so why complicate things? I haven't done a lot of 3 phase work. But what i have notice is some people will label their conductors in number sequence so cables mark 6 on line, neutral and earth are for circuit 3L3

there boards like this

1L1 1 3L1 7
1L2 2 3L2 8
1L3 3 3L3 9
2L1 4 4L1 10
2L2 5 4L2 11
3L3 6 4L3 12

 

[danzor]

I always start top left and work my way down the left side then back up to top right. But I've seen people start bottom left