Page 1
6. If replacing an existing switch or cooker unit, always take
c
areful note of the cables and any terminal markings there
m
ay be before removing the old unit. This should make it
far easier to wire the new product.
7. Before commencing with the installation, ensure the back
box is firmly fixed to the wall/ceiling.
8. Strip back the outer sheath on both load and supply
cables, then trim wires to approximate length to allow the
cable ends to reach the terminals.
SUPPLY cables are those from the distribution board,
LOAD cables are those going to the appliance/cooker.
9. Carefully strip back the inner insulation of both cables to
expose 20mm of wire.
10. Slide a length of green/yellow sleeving onto the bare
earth wires.
11. Connect the cables to the correct terminals, as shown in
either
Figur
e 1, 2 or 3
as appr
opriate.
12. Please note; the colour codes used in the UK prior to
April 2004 are as follows:-
3
6
• Back boxes for Cooker Units and 45A Switches with less
than 9mm deep front plates and where it is intended to use
10mm cable, should be recessed a further 6 to 10mm into
the wall.
•
Product and packaging should be disposed of via standard
refuse facilities at the end of their life.
INSTALLATION GUIDE
1. Partially unscrew all the terminal screws ready to receive
the cables.
2. Some products have the fixing screws clipped to the rear of
the product. These should be unclipped.
3. Wall mounted products having clip-on front plates can have
the plate removed by carefully sliding a screwdriver
between the ramp on the main body of the product and
the notch in the lower edge of the plate. The plate can then
be gently levered away from the wall.
4. Ceiling switches are operated by a puII cord and should not
be wall mounted. If required to be surface mounted, the 16
amp Switch requires a mounting block, MK part number
2051 WHI. The 50 amp Switch requires a square cornered
mounting box.
5. 32 amp Switches having front plates less than 9mm deep,
require the top and bottom lugs of the metal back box to
be bent back to clear the base of the product.
2
5
Double Pole Switches &
Cooker Control Units
Switches comply with BS3676 or BSEN 60669
as marked. Cooker Units comply with BS4177
P
lease keep this leaflet for future reference
4
SAFETY INSTRUCTIONS
• This product must be installed by a competent person in
accordance with the current editions of the IEE Wiring
Regulations (BS7671) and Buildings Regulations. If in any
doubt, consult a qualified electrician.
• To prevent electrocution, do not work on any appliance
live. Switch off the mains supply before commencing work.
• All products, apart from the 16A Ceiling Switch, have a
built in earth terminal. These switches must always be
earthed, the 16A switch, via its mounting box only.
•
To prevent fire hazard do not exceed the rated current.
• When mounted using a metal back box the following
minimum box depths should be used :
With a front plate, 9mm deep or greater
- 35mm for cable sizes up to 6mm diameter.
- 46 / 47mm for cable sizes of 10mm diameter.
With a front plate less than 9mm deep
- 46/ 47mm ir
respective of cable size.
43968PL Ed.3
In all other areas of the EU, as well as new build
installations in the UK after 2004 the colour codes used
ar
e:-
13. A length of green/yellow sleeved wire must be
connected to the earth terminal in the mounting box.
14. Before the product is screwed to the wall, if a neon is
present, check that the neon leads are pushed into their
locations on the rear of the product. The locations are
shown in the illustrations of
Figures 2, 3, 4 or 5. Neon
leads ar
e not colour coded, as it does not matter which
way round they are fitted.
15. Some products have more than one earth terminal, either
or all of these ter
minals can be used.
16.
Car
efully push the wir
ed unit back into the back box,
ensuring the cables are not trapped or pinched.
Fig. 1 16 Amp Ceiling Switch
SUPPLY
LN
LN
LOAD
16AX.DP 25OV~
A.C. ONLY
Red (Brown)
Black (Blue)
Green/
Yellow
Sleeve
Supply Cable
Red (Brown)
Black (Blue)
Green/
Yellow
Sleeve
Load Cable
Earth
Terminal
in Box
NOTE - Fig. 2 This is a typical terminal
layout for a 20 or 32 amp switch. The
position of the terminals may vary
dependant on the
type of MK Switch
used. Always
ensure each cable
is connected to
the correctly
marked terminal.
SUPPLY
LOAD
LN
LN
E
32A DP
250V AC ONLY
BS3676
Supply Cable
Green/Yellow
Sleeve
Neon
(when
fitted)
Green/Yellow
Sleeve
Load Cable
Red (Brown)
Black (Blue)
Neon Leads
should be
fitted with
Cables
Red (Brown)
Black (Blue)
RED = terminal marked ‘L’
BLACK = terminal marked ‘N’
GREEN/ YELLOW = terminal marked ‘ ’
BROWN = terminal marked ‘L’
BLUE = terminal marked ‘N’
GREEN/YELLOW = terminal marked ‘ ’
43968PL Ed 3 2/2/2006 10:54 am Page 1
Page 2
98
11
17. Using the fixing screws provided, mount the switch onto
t
he back box. Do not over tighten, so as to prevent
d
amage or distortion to the front plate. Adjust so the
front plate is square on the wall/ceiling.
18. If the product has a decorative clip-on front plate, for 45
amp switches, hook the plate on the clips at the top of the
product and apply finger pressure across the bottom until
the plate is heard to click into place. For all others, hook
the plate down the left hand side of the product and apply
finger pressure down the right hand side.
10
Fig. 3
45 Amp Switch
Fig. 4 50 Amp Ceiling Switch Fig. 5 Cooker Supply Unit
Cleaning Fr
ont Plates
In order to protect the quality surface finish of the front plate,
periodically clean with a dry lint free soft cloth. On no account
should abrasive or domestic cleaners be used.
L
L
N
N
MAINS
45A–250V
BS4177
COOKER
~
E
Supply Cable (Mains)
Red Black
Socket Neon
(when fitted)
Cooker Neon (when fitted)
Green/
Yellow
Sleeved
Green/
Yellow
Sleeved
Socket Neon
Connections
(when fitted)
Red Black
Load Cable (Cooker)
Cooker Neon
Connections
(when fitted)
(Brown) (Blue)
(Brown) (Blue)
OFF
N
L
LOAD LOAD
SUPPLY SUPPLY
Neon
Leads
Black (Blue)
Red (Brown)
Green/
Yellow
Sleeve
Green/
Yellow
Sleeve
Red (Brown)
Black (Blue)
Neon
Load Cable
Supply Cable
Note: The neon on the 45 amp Switch can be wired as a
locator or an indicator
. See positions for neon leads shown in
the diagram above.
Locator - means the neon is illuminated all the time, once the
mains supply is switched on.
Indicator - means the neon is only illuminated when the
switch is ‘on’.
NEON
NEON
N1
N2
L1
L2
45A 250V
a.c. ~ D.P.
BS3676
Supply Cable
Black (Blue)
Red (Brown)
Green/Yellow
Sleeved
Load Cable
Neon Leads
(when Neon
used as an
Indicator)
Green/
Yellow
Sleeved
Neon Leads
(when Neon
used as a
Locator)
Neon
(when
fitted)
Black (Blue)
Red (Brown)
®
MK Electric
Novar ED&S Ltd
The Arnold Centre, Paycocke Road, Basildon,
Essex SS14 3EA. U.K.
Tel: +44 (0) 1268 563000
Fax: 01268 563405
(UK Sales)
Fax: +44 (0) 1268 563360 (International)
email: technical@novar.com
web site: www.mkelectric.co.uk
Technical queries should be made to:
MK Electric, Technical Sales and Services Department
The Arnold Centre, Paycocke Road, Basildon, Essex SS14 3EA
Tel: +44 (0)1268 563720 Fax: +44 (0)1268 563064
All marks in this document identified with a R or TM symbol
adjacent to the mark are Trade Marks of Novar ED&S Limited.
43968PL Ed 3 2/2/2006 10:54 am Page 4
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