DIY'ers and Earth wires.

[Engineer54]

Why? Both if calculated and compliant are perfectly good at doing the job.

Far better in the case of metal containment than a separate CPC in the vast majority of cases in fact!!

 

[Jonspark]

Why? Both if calculated and compliant are perfectly good at doing the job.

Yeah just the way I prefer, hate to see 2 core swa .
Plus armoureds no good for bonding.

 

[Marvo]

I was working in one house with a kitchen fitter and he thought the primary reason for the earth wire was to aid stripping the cable ....lol...

It's also an alternative to using a catenary wire when you install flat twin as an aerial cable.

 

[Jonspark]

Think I've seen to many corroded connections in to steel enclosures

 

[Bobster]

Yeah just the way I prefer, hate to see 2 core swa .
Plus armoureds no good for bonding.

Well now that depends on the size of the cable being installed and the size of bonding required.

 

[Jonspark]

Just a pet hate really

 

[Lucien Nunes]

E54 and others, myself included, have hammered this to death. My contention was that a long spindly run of steel conduit with dozens or even hundreds of joints was not as reliable long-term as a continuous copper cable, but even on that there were opposing views. I'm happy with armour if it is properly made off with decent glands. Unfortunately that rules out 90% of all armoured work I've seen...

 

[Georgieboy]

I think it just looks better naked...

 

[i=p/u]

Earth wires are good neutrals for diyers

 

[telectrix]

even better as switched L's as used by plumbers on C/H systems.

 

[andyb]

E54 and others, myself included, have hammered this to death. My contention was that a long spindly run of steel conduit with dozens or even hundreds of joints was not as reliable long-term as a continuous copper cable, but even on that there were opposing views. I'm happy with armour if it is properly made off with decent glands. Unfortunately that rules out 90% of all armoured work I've seen...

Small point, but when using a separate conductor in metal conduit for the cpc, how do you test it for continuity?

 

[Bobster]

If it's only feeding one point, same as you normally would at the DB.

If its feeding multiple, the only real way without getting parallel paths is to disconnect from each point place in a WAGO or similar and then test.

 

[andyb]

If it's only feeding one point, same as you normally would at the DB.

If its feeding multiple, the only real way without getting parallel paths is to disconnect from each point place in a WAGO or similar and then test.

I agree Rob.
So if you have 30 or 40 points, that's a lot of work & connectors.

 

[Bobster]

All the metal containment I've installed have relied on the containment as the CPC.

Saved me the ball ache of testing like that.

Some of the systems I installed early out of my time are still passing their 6 monthly M&Q testing with flying colors. That's after being installed nearly 20 years.

 

[andyb]

If you need to test every 6 months then I would definitely use the containment.