Main earth into consumer unit

[shadybrady]

Just a quick question .. is there anything against feeding the main earth into the consumer unit from a bottom breakout and feeding it behind the bus bar and din rail into the main earth terminal bar in the consumer unit.

Just didn't know if there is a common/good practice to feed it either from the back/sides or top of the unit.

Thanks

 

[kai]

It makes no difference whatsoever.

The 16mm earth normally runs from the earthing bar inside the CU, straight to the earthing point on the right hand side of the Service Fuse Block or "Service Head" in a modern TNCS type installation.

 

[shadybrady]

This is a TNS installation - there is 16mm earth from the sheath to a earth terminal block and then out of the terminal block comes a 16mm earth staright up into the CU from a bottom breakout and 2 10mm earths for the gas and water.

Just never seen an earth cable passed in from the bottom behind the din rail is all.