no earths at lights and switches and bonding 6mm rather than 10mm

[jamesb1]

what the general take on this if say you where changing a db and and there was bonding present but not the right size but it satifys test limts ? and also say are changingthe db and some switches dont have a earth but are plastic ? and the same with a light fitting a all plastic fitting ?

 

[Deleted member 9648]

Best practice is to rewire the lighting circuits..........But if this is not going to happen I have on occasion changed the CU as long as all accessories and luminaires on the affected circuit are class 11. A label is provided at the DB, suitable manufactured labels are available from wholesalers.
This approach is fully in accordance with ESC guidelines, the safety of the installation is improved and as long as the correct cert is provided with all the info there can be no comeback if someone in the future fits a class 1 fitting or switch.

 

[ezzzekiel]

With regards to bonding remember it can either be given by selection or calculation using the adiabatic equation.

adiabatic shall not be used to size main bonding conductors.