Sky high ze reading

[davesparks]

Hello again. It wasn’t me who spoke to them on the phone so I have no idea if they were important. I installed a new fuseboard and when it came to testing the ze i obviously came across the reading. They sent someone out and that was when he told me the reading is fine providing it has suitable rcd protection, which it has. It’s a full rcbo board and the operating times were well within boundaries. I didn’t argue with him as I don’t deal with their side of things and therefore wouldn’t question that I know more about his job than him but personally I would not have been happy to walk away and leave it. They are supposed to be going back tomorrow morning to fix the issue though

So they are saying it is OK for 24 hours just until they fix it tomorrow, which makes perfect sense. That's very different to saying it is good for continued service as your first post suggested.

There is no need for anyone to argue with him, that kind of confrontational attitude will only lead to trouble, a sensible and well reasoned technical discussion would be a far better idea.

As others have said if this was an issue in the installation then it woukd be a C2 on an EICR and is not immediately dangerous, only potentially dangerous. The presence of RCD protection for all circuits reduces the danger to an acceptable level for the short term.

 

[Sparksaflyin]

Thanks for the input Dave. My post may have suggested that but I never actually said it was going to be left like it permenently and also I actually made a point of saying in my post that I didn’t argue with him. Why would I? As I said in my post he will know his job better than I do. I just assumed from the conversation my colleague had on the phone to the dno that as it was a potentially a very dangerous sotustion, that they would atleast put some effort in to stay and correct the fault there and then

 

[richy3333]

I had an issue with Hydro where the external loop impedance was 1.1 ohms on a TNS system. They said they would take no action until it went above 1.5 ohms.

 

[snowhead]

but personally I would not have been happy to walk away and leave it.

So was the installation left isolated by yourselves pending arrival of the D.N.O?

 

[Sparksaflyin]

So was the installation left isolated by yourselves pending arrival of the D.N.O?

I waited there until they arrived

 

[Sparksaflyin]

So...
You didn't bother to get yersen a Ze first... before doing your stuff...?

See how now your responsible for getting it sorted for em...?

I’m only responsible for getting the dno out to sort their problem. Once it’s handed over to them it’s out of my hands. That’s how I see it anyway

 

[davesparks]

I’m only responsible for getting the dno out to sort their problem. Once it’s handed over to them it’s out of my hands. That’s how I see it anyway

But you have to go back again once it has been fixed to do the live testing don't you?

 

[7029 dave]

Here we go.!!!!

 

[DPG]

Just like old times.

 

[Des 56]

Before the universal reliance on Rcds,if the same situation arose on a system in the past ,that high reading may have led to getting advice to provide Rcd protection until its sorted,same as now

Perhaps its the workplace perception of the potential danger that is changing as the system protections gets better