IET logo
 
IET
Decrease font size
Increase font size
Topic Title: Application of the proposed regulation 542.1.201
Topic Summary:
Created On: 29 July 2017 12:35 PM
Status: Read Only
Linear : Threading : Single : Branch
 Application of the proposed regulation 542.1.201   - sparkingchip - 29 July 2017 12:35 PM  
 Application of the proposed regulation 542.1.201   - dustydazzler - 29 July 2017 12:54 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 29 July 2017 01:00 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 29 July 2017 01:42 PM  
 Application of the proposed regulation 542.1.201   - Parsley - 29 July 2017 03:10 PM  
 Application of the proposed regulation 542.1.201   - dustydazzler - 29 July 2017 03:26 PM  
 Application of the proposed regulation 542.1.201   - dustydazzler - 29 July 2017 01:06 PM  
 Application of the proposed regulation 542.1.201   - Parsley - 29 July 2017 03:16 PM  
 Application of the proposed regulation 542.1.201   - psychicwarrior - 29 July 2017 04:44 PM  
 Application of the proposed regulation 542.1.201   - Alcomax - 29 July 2017 06:49 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 29 July 2017 08:07 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 29 July 2017 08:16 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 29 July 2017 08:14 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 29 July 2017 09:22 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 29 July 2017 09:59 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 30 July 2017 10:25 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 11:08 AM  
 Application of the proposed regulation 542.1.201   - Zoomup - 30 July 2017 11:00 AM  
 Application of the proposed regulation 542.1.201   - Zoomup - 30 July 2017 11:09 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 11:29 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 02:00 PM  
 Application of the proposed regulation 542.1.201   - Angram - 30 July 2017 02:55 PM  
 Application of the proposed regulation 542.1.201   - Zoomup - 30 July 2017 11:20 AM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 30 July 2017 12:28 PM  
 Application of the proposed regulation 542.1.201   - Zoomup - 30 July 2017 06:37 PM  
 Application of the proposed regulation 542.1.201   - Legh - 31 July 2017 11:13 AM  
 Application of the proposed regulation 542.1.201   - Zoomup - 04 August 2017 05:53 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 30 July 2017 12:35 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 04:43 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 05:21 PM  
 Application of the proposed regulation 542.1.201   - Zoomup - 30 July 2017 06:58 PM  
 Application of the proposed regulation 542.1.201   - Zoomup - 30 July 2017 07:31 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 08:06 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 30 July 2017 10:06 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 11:15 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 30 July 2017 11:28 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 11:40 AM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 31 July 2017 12:36 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 01:34 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 01:45 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 03:01 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 05:16 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 07:05 PM  
 Application of the proposed regulation 542.1.201   - Zs - 31 July 2017 09:45 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 31 July 2017 11:17 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 01 August 2017 09:05 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 01 August 2017 01:52 PM  
 Application of the proposed regulation 542.1.201   - OMS - 01 August 2017 07:02 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 01 August 2017 07:05 PM  
 Application of the proposed regulation 542.1.201   - Parsley - 01 August 2017 08:57 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 01 August 2017 09:59 PM  
 Application of the proposed regulation 542.1.201   - MWalker86 - 01 August 2017 06:54 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 01 August 2017 10:34 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 01 August 2017 11:07 PM  
 Application of the proposed regulation 542.1.201   - OMS - 02 August 2017 12:20 PM  
 Application of the proposed regulation 542.1.201   - OMS - 02 August 2017 12:22 PM  
 Application of the proposed regulation 542.1.201   - rocknroll - 02 August 2017 02:45 PM  
 Application of the proposed regulation 542.1.201   - OMS - 02 August 2017 04:56 PM  
 Application of the proposed regulation 542.1.201   - rocknroll - 02 August 2017 05:04 PM  
 Application of the proposed regulation 542.1.201   - OMS - 02 August 2017 05:12 PM  
 Application of the proposed regulation 542.1.201   - rocknroll - 02 August 2017 05:16 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 02 August 2017 06:17 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 03 August 2017 08:34 AM  
 Application of the proposed regulation 542.1.201   - OMS - 02 August 2017 06:47 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 02 August 2017 07:25 PM  
 Application of the proposed regulation 542.1.201   - dustydazzler - 02 August 2017 07:06 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 02 August 2017 09:11 PM  
 Application of the proposed regulation 542.1.201   - Zoomup - 03 August 2017 08:31 AM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 03 August 2017 07:07 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 03 August 2017 10:02 PM  
 Application of the proposed regulation 542.1.201   - AJJewsbury - 03 August 2017 07:37 PM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 03 August 2017 08:18 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 03 August 2017 10:10 PM  
 Application of the proposed regulation 542.1.201   - whjohnson - 04 August 2017 10:53 AM  
 Application of the proposed regulation 542.1.201   - Parsley - 04 August 2017 11:48 AM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 04 August 2017 05:49 PM  
 Application of the proposed regulation 542.1.201   - whjohnson - 03 August 2017 08:06 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 04 August 2017 03:49 PM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 04 August 2017 04:30 PM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 04 August 2017 06:00 PM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 04 August 2017 08:18 PM  
 Application of the proposed regulation 542.1.201   - whjohnson - 05 August 2017 12:05 AM  
 Application of the proposed regulation 542.1.201   - MWalker86 - 05 August 2017 03:04 AM  
 Application of the proposed regulation 542.1.201   - Zoomup - 05 August 2017 09:09 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 05 August 2017 11:49 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 05 August 2017 12:55 PM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 05 August 2017 03:57 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 05 August 2017 06:59 PM  
 Application of the proposed regulation 542.1.201   - Zoomup - 05 August 2017 08:28 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 06 August 2017 12:21 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 06 August 2017 12:27 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 06 August 2017 09:18 PM  
 Application of the proposed regulation 542.1.201   - whjohnson - 06 August 2017 08:10 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 06 August 2017 09:13 PM  
 Application of the proposed regulation 542.1.201   - iie63674 - 07 August 2017 08:45 PM  
 Application of the proposed regulation 542.1.201   - psychicwarrior - 07 August 2017 09:10 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 07 August 2017 10:47 PM  
 Application of the proposed regulation 542.1.201   - MWalker86 - 07 August 2017 10:51 PM  
 Application of the proposed regulation 542.1.201   - whjohnson - 07 August 2017 11:54 PM  
 Application of the proposed regulation 542.1.201   - iie63674 - 10 August 2017 09:13 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 12 August 2017 12:34 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 03 October 2017 11:11 AM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 12 August 2017 01:42 PM  
 Application of the proposed regulation 542.1.201   - whjohnson - 12 August 2017 02:22 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 12 August 2017 04:40 PM  
 Application of the proposed regulation 542.1.201   - dustydazzler - 12 August 2017 02:25 PM  
 Application of the proposed regulation 542.1.201   - weirdbeard - 12 August 2017 04:13 PM  
 Application of the proposed regulation 542.1.201   - geoffsd - 12 August 2017 07:29 PM  
 Application of the proposed regulation 542.1.201   - leckie - 12 August 2017 09:29 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 13 August 2017 12:11 AM  
 Application of the proposed regulation 542.1.201   - geoffsd - 13 August 2017 12:24 AM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 13 August 2017 12:42 AM  
 Application of the proposed regulation 542.1.201   - MWalker86 - 13 August 2017 12:56 AM  
 Application of the proposed regulation 542.1.201   - iie63674 - 13 August 2017 06:46 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 13 August 2017 01:00 AM  
 Application of the proposed regulation 542.1.201   - whjohnson - 13 August 2017 01:30 PM  
 Application of the proposed regulation 542.1.201   - geoffsd - 13 August 2017 07:06 PM  
 Application of the proposed regulation 542.1.201   - iie63674 - 13 August 2017 07:32 PM  
 Application of the proposed regulation 542.1.201   - sparkingchip - 02 October 2017 11:25 PM  
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 29 July 2017 12:35 PM
User is offline View Users Profile Print this message



sparkingchip

Posts: 9953
Joined: 18 January 2003

Here is the proposed new regulation:

542.1.201 The main earthing terminal shall be connected with Earth by one of the methods described in Regulations 542.1.2.1 to 3 , as appropriate to the type of system of which the installation is to form a part and in compliance with Regulations 542.1.3.1 and 542.1.3.2 . Additionally, there shall be an earth electrode, supplementing any earthing facility provided by the distributor, in accordance with one of the requirements of Regulation 542.2.3, to prevent the appearance of a dangerous touch voltage in the event of the loss of the main connection to Earth.

I would like to see some worked examples of the application of this proposed regulation, let's start with an installation I completed around nine years ago that is currently considered safe being earted to the DNO TNCS-PME earth terminals, but will no longer be considered so if the installation work were to be undertaken after the implementation of the 18th edition of BS7671.

The project was a conversion and extension of a large Victorian house into seven flats with a landlord supply to the common areas.

Central Networks ran in a new supply from the road, they installed a new PME electrode at the joint in the road, then around 60 metres of new cable to a joint with another PME electrode. From this joint there is a 10 metre branch cable to two single phase intakes at the side of the building for single flats and the main cable runs on to a Ryfield three phase head that belongs to the DNO this supplies five flats and the landlords supply, this three phase head has a single shared DNO earth terminal.

Three of the flats have gas supplies maximum demand 40 amps and have a single rate meter as does the landlords supply with a minimal demand, the other four flats are all electric with storage heaters and a maximum of 80 amps on dual rate E7 meters.

To comply with this new regulation does it have to have three installation electrodes or can the installer interlink the three DNO earth terminals to one electrode system? What is the maximum permissible Ra of the electrode system to be installed and what specification would you anticipate for this site with sandy soil?

The three phase Ryfield with the shared DNO earth terminal has a maximum demand of 120 A / 120 A / 85 A across the three phases, the two separate single phase intakes have a maximum demand of 80 A each.

Andy B

Edited: 29 July 2017 at 12:45 PM by sparkingchip
Statistics

New here?


See Also:



FuseTalk Standard Edition v3.2 - © 1999-2017 FuseTalk Inc. All rights reserved.

..