1. Switch the mains supply off. Remove the appropriate fuse or switch off the appropriate circuit breaker.

2. Make sure that nobody else can reconnect the supply while you are working.

3. If you are replacing an existing fitting, remove it now.

4. Clean the inside of any existing mounting box, remove any debris or dust.

5. Make sure that any existing fixing screws are secure and do not protrude.

6. Ensure you are using the correct rating and type of cable.

7. Ensure you understand the layout of the terminal connections before wiring. They can differ between fittings.

UK & IRELAND WIRING COLOURS

These fitting instructions only apply to installations in the UK & Ireland.

Ireland
Twin & Earth Cable: Brown = Live
Flexible Cable : Blue = Neutral

United Kingdom

Important Notice: Wiring colour changes

Installations wired after 1st April 2004 could be wired using EU harmonised colours for the supply conductors of twin & earth cable. The old colours ceased to be used from 1st April 2006. Flexible cable colours were unchanged.

Old Colours: Red = Live. Black = Neutral
New Colours: Brown = Live, Blue = Neutral  

All our standard dimmer switches are 250w max. trailing edge dimmers which are suitable for incandescent bulbs, good quality mains halogen bulbs and dimmable CFL bulbs. They are also suited for good quality dimmable electronic transformers and good quality dimmable LED bulbs.

Please note that our 250w trailing edge dimmers are not compatible with JCC 7w fire guard fittings, but we can supply a suitable leading edge module on request.

Our dimmer switches are 2 way, ie can be used for switching lights from either one or two places, but the other switch needs to be a standard rocker, dolly or on/off dummy dimmer switch.

1. Connect the cable as shown in the wiring diagram.

2. Carefully cut the outer cable sheath and peel it back to the required length.

3. Remove the excess outer sheath to expose the copper braided screen.

4. Roll back the screen over the top of the outer sheath. Trim back a short length of the inner insulation to expose the inner core.

5. Install the dimmers ensuring that no wires are trapped between the plate and the box.

6. Fix the plate with the screws provided. Do not overtighten the fixing screws.

7. Re-connect the power supply and test the switch.

8. It is normal for a dimmer switch to make a slight buzzing noise. This is caused by a radio interference suppression coil.

Jim Lawrence, The Ironworks
Lady Lane, Hadleigh
Suffolk, IP7 6BQ

Speak to one of the sales team on 01473 826685
Our telephone lines are open:
Monday - Friday: 9:30am - 5pm

Email us: sales@jim-lawrence.co.uk.