Plastic switch in external meter box

AJJewsbury:

BS 7671's requirement for a main switch (or main circuit breaker) is that it is as near as practical to the origin of the installation (462.1.201) - which is just what you want if you cut off power to the entire premises for whatever reason - so I still say (unless one is provided by the DNO) the the switch on a switchfuse should be used in preference to one on a downstream CU - especially by ordinary persons who are less likely to understand the distinction and/or be aware exactly where the submain cable runs for example.

I agree - and if it's the type where the fuse is easily accessible, take out the fuse and put it in your pocket. So is this now the main switch, and are you going to label it as such?

AJJewsbury:

BS 7671's requirement for a main switch (or main circuit breaker) is that it is as near as practical to the origin of the installation (462.1.201) - which is just what you want if you cut off power to the entire premises for whatever reason - so I still say (unless one is provided by the DNO) the the switch on a switchfuse should be used in preference to one on a downstream CU - especially by ordinary persons who are less likely to understand the distinction and/or be aware exactly where the submain cable runs for example.

I agree - and if it's the type where the fuse is easily accessible, take out the fuse and put it in your pocket. So is this now the main switch, and are you going to label it as such?