Neutral link to earth

rantoftheday · Feb 8, 2013

Can someone tell me why on certain installation where a main earth ain't in place ie domestic property why can't an earth be taken off main incoming neutral as a tn-c-s system instead if installing a tt system?

Sintra · Feb 8, 2013

trev said:
If you can aprenticesprky, print out that diagram that Frank posted. It's one of the best pictorial explanations I've seen of a TN-C-S earth path in a long time.
I'll see you after me ban expires

This one shows the fault path.

rantoftheday · Feb 8, 2013

Sintra do you have guidance notes in electronic format?

Sintra · Feb 8, 2013

apprenticesprky said:
Sorry sintra it's self correcting text and never noticed didn't realise it was frank. Trev, ill bet your 2 yo grandson is more competent than some of my journeymen. Ps good diagram

Could be 2 for the :ban: hammer tonight :lol:

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apprenticesprky said:
Sintra do you have guidance notes in electronic format?

I sure do

rantoftheday · Feb 8, 2013

Are they available to buy in e format? Where can I purchase? Kindle?

Sintra · Feb 8, 2013

You can get the full package from the IET for £215.00 should work on kindle through vital source bookshelf.

IET Wiring Regulations BS 7671:2008(2011)
Guidance Note 1: Selection & Erection
Guidance Note 2: Isolation & Switching
Guidance Note 3: Inspection & Testing
Guidance Note 4: Protection Against Fire
Guidance Note 5: Protection Against Electric Shock
Guidance Note 6: Protection Against Overcurrent
Guidance Note 7: Special Locations
Guidance Note 8: Earthing & Bonding
On-Site Guide
Electrician’s Guide to the Building Regulations
Electrical Installation Design Guide: Calculations for Electricians and Designers (new edition to be added upon publication, late 2012)

Wiring Regulations Digital - Business Package - IET Electrical

rantoftheday · Feb 8, 2013

Does this price include any updates?

rantoftheday · Feb 8, 2013

And also does this work on iPad?

Sintra · Feb 8, 2013

Not 100% sure but I have had a few of the books that have come up "new version available download now" and haven't been charged anything extra.

Sintra · Feb 8, 2013

apprenticesprky said:
And also does this work on iPad?

You are allowed to download onto 2 mobile devices and 2 PC's. I have it on iPad and iPhone and they work well.

rantoftheday · Feb 8, 2013

Sounds like a good investment but heavy initial outlay plus I ain't a member so won't get discount

rantoftheday · Feb 8, 2013

Do you use all guidance notes or generally just 1,2,3

Sintra · Feb 8, 2013

Keeps everything at your fingertips so to speak. IMO well worth the money

trev · Feb 8, 2013

All of them.

Silly Sausage · Feb 8, 2013

Don't forget the sadly, but extremely good and useful, neglected GN8!

If you only buy two, make them GN3 & 8.

Engineer54 · Feb 9, 2013

The Magic word in PME is the M, which stands for ''Multiple'' !!

If the neutral hasn't been earthed at multiple locations along a distribution cable length, then you are just inviting trouble/disaster by making your own TNC-S link....