Help with consumer unit and MCB's

[allybally69]

Hi, I am training to be an electrician and would just like some advice, when wiring up a consumer unit you always put the highest amp mcb nearest the main switch, what happens when you get 3 x 20 amp MCB's, 2 of which are type B and 1 type C, does that matter what order they go in.

Thanks in Advance

Alex

 

[Electricalserv]

No it doest

 

[Electricalserv]

I go the other way to be honest

 

[Deleted member 26818]

You don't have to put the highest rated nearest the main switch, it's just the convention.
Some people order their MCBs from the top of the house down.
As for different Types, it's your choice.