Thanks Ian; I'm not conversant with earthing rod criteria (except the TT/PME caveats) but I think I understand from your text the problem potentially arising from 2 separate earthing connections. Took me a couple of readings etc. though. What is MET an abbreviation for?
Main Earthing Terminal
Can you please tell me where you got the supposed quotes of mine from? I'm scratching my head, because I vaguely remember getting explanations (via a link?) to my questions relating to TT and PME earthing and you might well have been the chap who advised me. If so, it must have been a long time ago and I give you credit for superb forum post archaeology.
One of your many many posts upon the subject Mike
Unfused? I have 1 radial per piece of kit, fused by its own RCBO. Each cable is either 6 or 10mm2, which I admit, is unnecessarily o.t.t. but what the hell? Your potentially dangerous synopsis of adding to these circuits would not apply. For others with fewer radials which are then split into 'spurs', this could well be pertinent.
Mike just because you choose to disregard something doesn't make you correct. The regs are there to mitigate possible but likey and unlikely events that can cause damage to property and self, it has been explained why your install is potentially unsafe and doesn't meet the regulations.
I would very much like to see how your 100Amp connections have been made with 10mm t&e and 1.5mm flex , Please provide a picture for me.
You say you are a landlord, and have a light grasp of those regulations, I wonder would you allow one of your tenants to instal a selection of oversized cables through the property terminating them with unswitched and unfused captive kettle leads ? No of course not.
It's about as quick for me to access my c.u. as disconnect IECs; besides, the RCBOs would handle fault conditions, I'm led to believe, obviating the need to rush anywhere.I've just thought that, in your latter (captive lead) scenario, would not disconnecting the fuses (simple half turn) have the same effect? Not sure about this, but seems feasible.
There are reasons means of isolation are put close too or alongside fixed appliances or equipment, try and guess why.
You have reached new heights of lunacy with the last two sentences.
Hi Bill,
I meant to get to this yesterday, but didn't have time...
So are you saying then that with 'TT systems', in an old property such as mine, it's feasible to be able to significantly reduce the impedance of the house earth, with the use of additional rods, such as I've done, and if that's the case, then why shouldn't it be audible?
Others and I certainly heard the difference, that's for sure! And not only with my installation, but in other systems where the same work was carried out in similar properties.. Therefore, just as the reduction in impedance wasn't 'imagined', but indeed measured on an appropriate testing device, I'd also contend that neither were the subsequent sonic improvements!
An interesting observation. Perhaps that's why I heard a notable improvement in SQ when I moved from using standard twin and earth in my mains set-up to this stuff instead: https://www.tlc-direct.co.uk/Produc...MI6OG75MfV8AIVToFQBh3y3AzNEAQYBiABEgLb9PD_BwE
Bloody nightmare trying to get it into sockets, though!
But it definitely made the system sound better, especially in the areas you mention!
Based on my experience, I'd certainly say so. Conductive concrete, I used this stuff (if you have time to read through it, there is some very interesting info here on all aspects of earthing and how this material improves and streamlines the whole process): http://earthingservices.com/conducrete/) is very effective and for me the way to go, if want to go the job right and make it last a lifetime.
So if you do go ahead with your intended project, please document it here and post your findings, as it's this sort of stuff we need to see far more of on forums!
Marco.
Indeed.
In my view the world is broadly divided into two groups - (a) those who have such an evangelical zeal regarding their beliefs that they will never stop proclaiming them or relax until everyone else agrees with them and (b) those who know what they think, aren’t about to change their minds, but really don’t give a toss if others disagree with them. I bet you can’t guess which one I’m part of.Why, if you're passionate about your views and what you think is right, then in my book you defend them to the death!
