Main switch and breaker arrangements which way.....

[Jimmy Boy]

Do you prefer to do them I prefer Main on left breakers to the right 6A > Highest reason for asking ? I have seen a few pics on here of late with main on right.

ATB J

 

[Guest123]

Suppose it depends on the flavour of CU you use.

I always go high-low from MS/RCD though.

 

[spark 68]

I usually reconfigure to suit the installation, and like Lenny said High to low (as this was the way I was taught) from the MS/RCD.
Sometimes on CU replacements this is not always easily possible, but I try to keep to this convention where possible, I suppose since almost all CU's nowadays have 100A busbars this is not as important as it once was.

 

[Jimmy Boy]

Was there a logical reason for 'High to low' as opposed to 'Low to high' ?

ATB J

 

[spark 68]

Was there a logical reason for 'High to low' as opposed to 'Low to high' ?

ATB J

Yes,

Heaviest current/load towards the main switch (incoming supply).