Connecting main protective bonding conductor into MET thoughts

[Lumie]

Any thoughts about connecting main protective bonding conductors into the MET instead of distribution boards?

Watched a spark do it the other day and never really thought about it myself. Achieves the same result so it shouldn't be an issue.

 

[Andy78]

Protective bonding conductors should be terminated into the MET. Sometimes in domestic installations the MET is the bar in the consumer unit, but not always.

 

[Dave OCD]

Where there are enough suitable terminals within the DB I think this is ideal to use as the MET, all out of the way of tampering.

 

[Lumie]

Thats my preference, at the DB. Dosen't stop the plumbers ripping off your earth clamp at the stop tap though does it!

 

[Dave OCD]

And kitchen fitters.

 

[Andy78]

My preference is an MET external to the DB/CU. Saves clutter in the board and makes for easier future testing.

 

[Dave OCD]

If they're neatly terminated it's not cluttering at all, and it's no major problem to undo 2 screws for testing, after all you'd need to be in there as well if testing.

 

[Midwest]

In domestic installations, MET within CU/DB is ideal. Stops plumbers/kitchen fitters/DIY'ers fiddling with a little green/yellow cables of no obvious, use from being disconnected etc IMO

 

[The Ghost]

I think on domestic it is neater and probably safer, but in commercial it is easier to have an MET outside the DB and all the earths going from it and the Bonding on it as well. I mean where there are several or more DB in the vicinity (close)

View attachment 36038

 

[Wilko]

That looked neat until you did that expansion in old cable V ...

 

[westward10]

Going to put a notice at the earth terminal.

 

[The Ghost]

expansion in old cable V

Yeah lost it toward the end!

Going to put a notice at the earth terminal.

Yeh, what do you think it ought to say? Something like safety electrical connection do not remove?

 

[buzzlightyear]

the name met is now called (ADS).

 

[HandySparks]

the name met is now called (ADS).

Eh?

 

[Pete999]

Eh? again