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sollysta Wiring Accessories Guide
4
Selection and erection
All equipment must be correctly selected and erected.
BS 7671 states that the following, along with manufacturer’s
instructions should be considered:
• Compliance with standards
• Operational conditions
• External influences
• Accessibility
BS 7671 recognises equipment complying with an
appropriate British Standard or Harmonised Standard
without further qualification. This approach means that the
person responsible for specifying the equipment must
identify the “appropriate” standard. The relevant British
Standards for wiring accessories are identified below:
Product Group
Standard
10AX Wall Switch
BS EN 60669-1
Dimmer Switches
BS EN 60669-2-1 (including
BS EN 55015
5A Unswitched socket
BS 546
13A Switched & Unswitched Socket BS 1363-2
13A Fused Spur
BS 1363-4
20A Functional Switches
BS EN 60669-1
20A Isolation Switches
BS EN 60669-2-4
20A Cable Outlets
BS 5733
45A Functional Switches
BS EN 60669-1
45A Isolation Switches
BS EN 60669-2-4
45A Cable Outlets
BS 5733
45A Cooker Control Units
BS 4177
10AX Ceiling Switches
BS EN 60669-1
Fan Isolator Switches
BS EN 60669-2-4
50A Ceiling Switches
BS EN 60669-2-4
Shaver Socket
BS EN 61558-2-5
TV Outlets
BS 3041
Satellite Outlets
BS EN 50083-2
Telephone Sockets
BS EN 6313-2
Surface Boxes
BS EN 60670-1
The wiring accessory is usually the final connection of the
fixed wiring. The installer needs to follow manufacturers’
instructions in order to install the correct back box at the first
fix stage. This will avoid any frustrations later with there
being insufficient room within the box for the cables.
The accessory may also provide a termination between
solid and flexible conductors such as in a flex outlet plate
used, among other applications, for a heated towel rail in a
bathroom. The installer needs to consider the type of cables
being joined or terminated here as prescribed in 526.2.
It would be appropriate to terminate wherever possible solid
and stranded conductors into separate terminals in order to
fully comply.
“ Ensure manufacturer’s instructions are
followed ”.