Up front Rcd question

[DPG]

Indeed you have.

 

[Dirk boddington]

To be fair, I'd rather take my chances with a 100ma time delay rcd as protection as opposed to nothing. So it still serves a purpose as both, just more chance of a fatality than with the 30ma.

I know it's to clear a fault if my 30ma fails but as someone who has had a live 415v set of brush gear in my hand as an apprentice, I'd rather it cleared in half a second than wait until the wires burn out. (Luckily the earth was also in the same hand!)

 

[Midwest]

No I'm not, it's a simple fact. What is the point of fault protection if not to save life and property???



And as I said before, numerous times, to the point of banging my head against a brick wall, why is additional protection even being mentioned in a discussion about fault protection??? The subject is completely and utterly irrelevant.



Good for you.



You wanna know what I find rude? You wanna know what gets up my nose?

People who despite their obvious lack of knowledge in a particular subject and despite the fact that others have put time and effort into attempts to educate them correctly regarding that particular subject, are still willing to write off facts as mere 'opinions'.

Suffice to say I personally find one of the most obnoxious things a person can do is to lose the capacity to reason, but claim that it is indeed everyone else that has lost that capacity instead.

There's a very understandable reason why I'm being abrasive towards you Midwest.

I take it you wouldn't fancy going down the pub for a pint to discuss then

It was a nice discussion till it turned nasty. Think I'll bow out now, before things get silly.

 

[D Skelton]

I take it you wouldn't fancy going down the pub for a pint to discuss then

Anytime bud

 

[Midwest]

Are you in Canada or anywhere near Oxfordshire?

 

[Dirk boddington]

They make me nervous Ian, if that electrode connection corrodes or becomes detached that's it, they won't work. I'd always recommend their replacement ASAP, and how do you test one properly apart from the test button, nah best replaced IMO.

I saw one of these at a friends house many years ago, gave the earth cable a tug and the top 6 inches of the rod came out, it had completely corroded. Luckily his water pipe earth was still pretty damn good, he replaced the rod asap all the same but I imagine most TT installations are like that eventually so I check mine regularly, the original is buried under concrete but there are two others (as you can tell, I like backups)

 

[Des 56]

trip

I saw one of these at a friends house many years ago, gave the earth cable a tug and the top 6 inches of the rod came out, it had completely corroded. Luckily his water pipe earth was still pretty damn good)

If my memory serves me,they used to have earth connections for rod and frame
If the earth to the rod disappeared,that water pipe earth wouldn't help it trip
They served their purpose at one time,although they had their weaknesses,but these days,the bin is where they are best sited

 

[D Skelton]

Are you in Canada or anywhere near Oxfordshire?

Yeah I'm currently a long long way from Oxfordshire sadly.

 

[Deleted member 9648]

IMHO with a 30ma you'll be thrown halfway across the room and with a 100ma S type you'll be thrown all the way. Cant see why it took 118 posts to sort that one out.

 

[Guitarist]

My advice would be to get an electrician to test across Line and Neutral, and if he measures below 0.35 ohms, then there's a good chance that the power company (not supplier) who deals with your network will convert it to a TNC-S system. It may also be that your supply cable even has a lead sheath and can be converted to a TNS system. I have come across both these scenarios many times, and have had several TT systems changed by the network provider. Just be aware that if things are changed, there may be main earthing and bonding work to be done.