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sollysta Wiring Accessories Guide
13
Fan Isolators
3 pole fan isolation switches are commonly installed in
household applications so that the fan in the bathroom can
be completely disconnected from the supply. This may be to
provide the functions of Isolation or switching off for
mechanical maintenance (functions previously described
under cooker connections).
Fans in bathrooms are commonly activated by turning on the
light and incorporate a run on timer. For this reason a 3 pole
device is required to disconnect both the permanent and
switched – line conductors.
These devices are required to be secured so as to prevent
unintentional reclosure or are required to be placed so as
under the control of the person working on or replacing
the fan. A normal wall mounted fan isolation switch will be
required to be located outside of zone 2 as described in
BS 7671 section 701. Should this not be practical a ceiling
mounted version might be considered that is operated via a
pull cord. In either case a suitable device would be one
complying with BS EN 60669-2-4.
Shaver socket outlets
Shaver sockets are common place in domestic installations,
usually in the bathroom. The required standard for this device
is BS EN 61558-2-5. This unit provides electrical separation
for one item of equipment (i.e. the shaver) as described in
BS 7671. This device is permitted in zone 2 as described in
regulation 701.512.3.
“ 3 pole cord operated fan isolation
switches may be required ”.
“ Shaver sockets are permitted in zone 2
or outside of zones ”.
Other
Ceiling
2.25m
0.6m
Zone 1
Zone 0
Zone 2