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New edition of IEC 60364-7-701 (Special locations containg a bath or shower)

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Just posting in case it is of interest...

IEC have recently published IEC 60364-7-701:2019. This is the standard that Section 701 of BS7671 is based on, so the changes might or might not roll through in a future update of '7671.

The Abstract is free to view (along with a longer preview) on the IEC website at https://webstore.iec.ch/publication/28906 and is pasted below:

Abstract



IEC 60364-7-701:2019 applies to electrical installations in indoor or outdoor locations where a bath tub and/or a shower is intended to be permanently placed in a specific location.
The extent of the location containing a bath tub and/or a shower is limited by:

– the lowest finished floor level;

– a horizontal plane 3 m above the lowest finished floor level;

– a vertical circumscribing virtual surface at a distance of 4 m from the fixed water outlet for the bath tub or shower; and

– the volume within the walls, floor and ceiling that border the location containing a bath or shower, measured to a depth of 6 cm.

The requirements of this document also apply to fixed electrical installations in mobile applications, for example caravans, mobile homes, shower containers. This document does not apply to emergency facilities, for example emergency showers used in industrial areas or laboratories.

This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

– the scope gives precisions relevant to the application of this document;

– the description of zones is improved;

– relevant terms are defined.


Parents
  • 0
    well nearly all UK bathrooms are limited by walls and ceilings, not the 3m vertical or 4 horizontal distance limit, so no change there.

    However, the idea that the bathroom extends for 6cm into the walls and floor is a slightly new take on things, as far as I know the boundary was just the wall or floor, and most of us assumed to refer to the inner skin of the wall tiles or whatever.  The zones 0,1,2 are well inside that as well. This outer boundary is in effect a non-existant zone 3.

    However the use of suitably IP rated fittings in  the inner zones is allowed.
Reply
  • 0
    well nearly all UK bathrooms are limited by walls and ceilings, not the 3m vertical or 4 horizontal distance limit, so no change there.

    However, the idea that the bathroom extends for 6cm into the walls and floor is a slightly new take on things, as far as I know the boundary was just the wall or floor, and most of us assumed to refer to the inner skin of the wall tiles or whatever.  The zones 0,1,2 are well inside that as well. This outer boundary is in effect a non-existant zone 3.

    However the use of suitably IP rated fittings in  the inner zones is allowed.
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