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My understanding is that @Murdoch is correct in that there is no qualification or scheme requirement required to undertake EICR's, but if you want to issue EICR certificates/paperwork including the NICEIC logo, then they insist that you are Approved Contractor status.

Also, at what point is deemed necessary for us to provide these devices to protect circuits - just for a new cu? new circuit? minor works?

 443.4 says if you dont do a risk assessment you have to fit them except for single dwelling units where the total value of installation and equipment therein does not justify SPD......

The way I read 443.4, no SPD or risk assessment is necessary for single dwelling units where the total value of installation and equipment therein does not justify SPD.

So do you see this as 102 Dave? Are you derating the cables at all?

Thanks Dave. Of the two options, I'm now leaning towards running cables in the void. So cable will be loose in 40mm void formed by the gap between the insulation to either side. What i can't decide is what installation method covers this the closest? I will probably opt to run 16a/20a radials...

This is how I picture it - a void between the 100mm celotex and the 12mm celotex by virtue of the stud being 140mm and the celotex being tight up against the OSB. So cables in that void is one option I considered - the other option is between the 12mm celotex and the plasterboard so the cable...

Dave yes the first install scenario I'm talking about is the first floor of an extension. Ground floor is masonry first floor is timber frame. I was trying to choose between two ways to do the job: You're right there is no gap between d & e - so I see this as 102. The other way I was...

No it will be sockets too...

I have to install t&e cables in the following environments so i'm interested in other's opinions as to appropriate Installation methods  Firstly, stud wall constructed as follows: a) 47mm x 140mm Stud b) 12mm OSB external to stud c) 100mm celotex between studs pushed up against OSB d)...

Its an existing farm labourer's semi detached cottage - probably 60/70 years old . No obvious sign of any existing rod - I suspect earth is currently via water service (about 56 ohms) - but I haven't been able to get in and have a proper root around yet...

As per title I will be doing my first rod install in the near future. I'm looking for recommendations as to what kit people prefer - rod sizes , brands, inspection pits etc and general tips and methods/advise regarding the installation itself. All help much appreciated. Many thanks.

Good post! Would you care to elaborate on the series of tests you usually perform upfront?

What fixings are people using/considering using to comply with the regs regarding premature cable collapse? I've used Safe D fire rated cable clips within trunking but had mixed results when fixing with DeWalt Walldog screws alone - depending on what I'm trying to fix to! I'm also interested...

Anyone?

I need to install a supply for a Velux Integra window in a flat roof. I intend to use the existing lighting circuit (Velux state max 200w - I'm also replacing 5 branch light with LED downlights so capacity is there). Is it acceptable to position the FCU unit in the ceiling recess where the...

And another U turn .... https://www.independent.co.uk/philip-hammond-tax-cut-self-employed-scrap-conservatives-national-insurance-contributions-nic-class-a8526236.html

A fun read! - we have nicknames for all our neighbours here, those we speak to and those we don't - some nick names being more complimentary than others......

At the bottom of this page http://www.dimension-productions.co.uk/products.htm there is an email address you could try....

https://www.onlinethreatalerts.com/article/2017/11/21/beware-of-www-chinadomainregistry-net-it-is-a-fake-cn-and-asia-domain-name-registration-website/ But of course we don't actually know that what this website says is correct either .....