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Well I described very clearly the clamp type, style, normal use, and BS reference and they (EDF) said that it's appropiate, I'm only stating what I was told, if they said "no"... then it would be "off" in 2 mins... As I said i'lll email their technical Dept and re-request clarification, well...

nice vid... but I described exactly the installation in question (and clamp type) and they "welcomed" the additional bonding on my description of the state, size, age, oxidisation etc etc of the original wiring, the conversation was recorded.... Ze (without is 0.4 Ohms) so is...

the fusable link is/will be 100 Amps (at the supply head) according to a Siemens Engineer this DNO type supply feed is "good for 1500 Amps" but he didn't specify for what period of time, ie continuously rated or for x Seconds etc etc BTW with reference to the BS951 clamp and additional...

don't understand "Sidmus" pls explain? If you want £5 then I can do a PayPal or FastBACS transfer and you'll "have it" in 30 seconds ....

I've been "told that" many times in business (IT), my "enthusiasm" has "done the biz" despite not the "technical expert" - as to a Project success...

hmmm, again my telephone call to EDF tomorrow may answer this, if they give me a reply I'll post it in this Forum...

the client is actually "my wife" and as she is funding the "project", I've written to her (with the official wording/recommendations) etc and more than 90% of the issues have been agreed to be "sorted" by myself as the Installer to the agreed timescales and my charges, and of course to the...

yes point taken, the "damage" could be at/around my board, I'll "consult" with EDF 1st thing tomorrow as to BS951 clamps, if they need to "upgrade" the CPC to the earth "bus" then they can do that. I'm welcome.... I just think that 6 or 8 mm2 is "not up to it" - but that's a legacy cpc...

hmmm... that's an overload for quite a considerable period, if it's 560 Amps per "installation" .... so it could take 1000 Amps for say 30 secs with no "issue"...

yea, see my later posting..

I don't believe it's RCD type protection, I can find out exactly how/what the "protection" is, but this would take me about a week and I might not be able to publickly disclose my "findings"

hmmm.. it'll actually be a 100 Amp fuse, need to check out the specs for the DNO fuses and what mm2 thier supply actually is, (I'm not going to try and measure it (each core) with my micrometer though) but as you rightly know fuses "run" at overcurrent" for quite a few seconds if not an hour...

yea - sussed that - it took me 15 ms, just a bit quicker than my WYLEX RCBO ...!!!

Ok !!!! :wink:

why Sunday?

I'd think that you'll be surprised, the DNO feeds are very good - so is thier protection, as I said I wouldn't want to try it in practice, 2 reasons, it'll take the whole block out, and the DNO may then want to replace thier feed to my system board, (would require digging up 2 rooms and a nice...

I'll contact EDF/Siemens tomorrow morning, I have a good contact there and he will advise me accordingly... if it actually means taking off the additional bonding then that's no issue, it only means that the water/gas bonding may take the "extra" - and I don't think that Transco want thier...