Consumer unit mounting location

[julioarca]

Just thought I'd ask what might be an obvious answer.

The CU in my house is not mounted horizontal, but vertical because the cupboard it is in is too smalll for it to go horizontal. Should this be a problem?

 

[Taylortwocities]

Unusual but i dont think it would be a problem.
If I was doing the job i would install two small consumer units one above the other.

 

[Steve]

I dont see it being any different to how commercial distribution boards are mounted, with the MCBs sideways:

 

[julioarca]

thanks gentlemen

 

[securespark]

Just to put a small spanner in the works, I contacted Crabtree (Electrium) once about a CU that was mounted to the joists (ie look up at ceiling & you see the front of the unit).
Admittedly, it is a more unusual mounting position than yours, but Crabtree told me that in this position thay cannot guarantee that the RCD would operate.
The reason for this is that the heat it generates is lost normally upwards. In the normal mounting position, that means the heat leaves the RCD rapidly, but in other mounting positions (and particularly in my case), it would not leave the RCD, but rise into it & that could affect its operation.