Confused about the terminal numbers in a distribution board

[John J]

Recently I’ve started my level 3 electrical course but get confused with what the numbers mean for the earth and neutral terminals .

 

[Silly Sausage]

So you can match up the cpcs and neutrals with the mcbs.
eg E2 goes with N2 and circuit (mcb) 2 etc etc ...

 

[John J]

But how do you know it goes into that terminal though

 

[Zdb]

It just does.

 

[Octopus]

MCB 1 = Neutral 1, = CPC 1

Simples

Except .......... if its a CU change and the existing cables are short I tend to go by length rather than adding unnecessary joints

 

[chris gray]

The numbers are there to identify which go where

 

[John J]

@Murdoch how do u know which is mcb1

 

[Pete999]

@Murdoch how do u know which is mcb1

Me I go from the left in line with the numbering on the Earth and N bus-bars, depending on how the Bus-bars are configured, horizontal or Vertical.

 

[richy3333]

Coz protocol dictates its the one nearest the main switch

 

[buzzlightyear]

how do u know which is mcb1

by looking at it .

 

[Strima]

Its next to MCB 2...

 

[buzzlightyear]

Its next to MCB 2..

3,4,5,6,7,8,and so on.

 

[telectrix]

MCB1 is generally the one closest to the main switch. usually right to left unless you have a MK board which is left to right.

 

[buzzlightyear]

MCB1 is generally the one closest to the main switch. usually right to left unless you have a MK board which is left to right.

this comes to mind .lol .

 

[GMES]

Can't put it next to the main switch if it's a 3 phase board.

 

[buzzlightyear]

Can't put it next to the main switch if it's a 3 phase board.

loading .

 

[Deleted member 26818]

If the E and N numbers start on the left, then MCB 1 will be on the left.
If they start on the right, MCB 1 will be on the right.

 

[Pete999]

If the E and N numbers start on the left, then MCB 1 will be on the left.
If they start on the right, MCB 1 will be on the right.

https://www.amazon.co.uk/Partex-Cab...=1541184538&sr=8-1&keywords=cable+markers+kit
I used these as well just in case,

 

[MJPD29]

It's all about good practice. If it's just mcbs it won't matter but in my opinion it won't be good if you don't match them but if there's a split board you'll at least need to make sure it's in the right bar if not number

 

[JK-Electrical]