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Schneider Electric (Merlin Gerin, Square D, Telemecanique)

Electrical Installation Guide. August 2007 update.

This Guide is based on relevant IEC standards, in particular IEC 60364. IEC 60364 has been established by medical and engineering experts of all countries in the world comparing their experience at an international level. Currently, the safety principles of IEC 60364 and 60479-1 are the fundamentals of most electrical standards in the world .


The 'Book' Eur45
http://www.electrical-installation.schneider-electric.com/

The 'PDF' files - zilch.
http://www.electrical-installation.schneider-electric.com/ei-guide/electrical-installation.htm

:cool:
 
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it looks sensible, but does not seem to conform to UK practice. I think it has been translated into English from some other document.

e.g.

from chapter P

1.3 Protection of people

On TT earthed systems, the protection of persons is ensured by the following measures:

b Protection against indirect contact hazards by RCDs (see Fig. P5) of medium sensitivity (300 mA) at the origin of the installation (incorporated in the incoming supply circuit-breaker or, on the incoming feed to the distribution board). This measure is associated with a consumer installed earth electrode to which must be connected the protective earth conductor (PE) from the exposed conductive parts of all class I insulated appliances and equipment, as well as those from the earthing pins of all socket outlets

b When the CB at the origin of an installation has no RCD protection, the protection of persons shall be ensured by class II level of insulation on all circuits upstream of the first RCDs. In the case where the distribution board is metallic, care shall be taken that all live parts are double insulated (supplementary clearances or insulation, use of covers, etc.) and wiring reliably fixed

b Obligatory protection by 30 mA sensitive RCDs of socket outlet circuits, and circuits feeding bathroom, laundry rooms, and so on (for details of this latter obligation, refer to clause 3 of this chapter)


and

The power distribution utility connects the LV neutral point to its MV/LV distribution tranformer to earth.
All LV installations must be protected by RCDs.
All exposed conductive parts must be bonded together and connected to the earth.
 

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