There are 3 Surewire pre-wired maintenance free light and switch junction boxes available SW6L-MF, SW4L-MF and SW2L-MF.

Each model has 2 power in/out connections and a number of independent light and switch connections.

SW6L-MF is a 6way pre-wired maintenance free light and switch junction box which has 6 independent light and switch connections.  It has been designed to accommodate with one unit 4 bedrooms with bathroom and hallway lighting.  SW4L-MF & SW2L-MF are 4 & 2way pre-wired light and switch junction boxes respectively.

SW2L-MF has been designed for the addition of extra lighting including extensions, conservatories, garages, lofts and outdoor lighting etc.

• Easy to wire and maintain

• Less complicated saving time and effort

• Reduces the number of terminal connections

• All connections are cut and stripped to the same length

• Modular and integrates into any system

• All cables are strain relieved

• Can be used in domestic, commercial and industrial premises

• Rated to 16A 250V

• Approved to BS EN 60670-22

Other Benefits

• Surewire is very simple to wire with the circuit pre-determined and clearly marked on the box.

• Each wire has its own terminal connection which is best practice.

• Any maintenance or adding additional light switches and light connections is very simple.

• The lids have recessed areas where stickers or tape can be fixed to identify the light location.

• Screws in the lid are retainable so you don’t lose them when the lid is removed.

• The box has cut out tabs so no connection is left open if it’s not being used.

• Securing holes in the box base are spaced so it can be secured easily to a standard 3” beam.

• If a light connection is no longer required, simply remove the connection.  No rewiring required.

Model Description Connections Rated Sizes
SW6L-MF 6way Pre-wired Maintenance Free Light and Switch Junction Box 2 power in/out connections and 6 independent light and switch connections 16A L245 x W135 x D22mm
SW4L-MF 4way Pre-wired Maintenance Free Light and Switch Junction Box 2 power in/out connections and 4 independent light and switch connections 16A L191 x W135 x D22mm
SW2L-MF 2way Pre-wired Maintenance Free Light and Switch Junction Box 2 power in/out connections and 2 independent light and switch connect 16A L137 x W135 x D22mm
Surewire
Terminal Specification
Cut and remove breakouts on base as required
Press terminal to insert or remove conductor
Conductor size 0.5mm² to 1.5mm² solid or stranded
Cable strip length 10mm
Maximum number of conductors per unit:
SW6L-MF=42, SW4L-MF=30, SW2L-MF=18
Maximum 1 conductor per terminal
Test point located on top of each terminal

How to install

One cable goes from the consumer unit to the junction box P I/O connection, one cable goes from the junction box S connection to the switch and one cable goes from the junction box corresponding L connection to the light.  If extra light and switch connections are required, another Surewire junction box can be added in series by using the spare P I/O connection.

To integrate Surewire into current systems, isolate the power, locate the lighting radial power cable, cut the cable and wire to both ends of the Surewire junction box at the P I/O connections.  This reinstates the radial power and gives you extra light and switch connections.

 

Single Junction Box Radial System

• Figure 1 is an example of the single junction box radial system.

• One cable brings power in, one cable takes power out, one cable goes to the switch and one cable goes to the light.

• Wiring can be complex and time consuming.

• All wires are cut to a variety of different lengths.

• Any maintenance of the junction box or adding additional light switches and light connections can be very complicated.

• Cables are not strain relived.

Loop-in Ceiling Rose System

• Figures 2 is an example of the loop-in ceiling rose system.

• One cable brings power in, one cable takes power out and one cable goes to the switch.  This method eliminates one cable connection as all cables are wired directly into the light.

• Wiring can be complex and time consuming with 3 cables to strip, bend and wire with limited space available.

• All wiring has to be done above head height which isn’t good ergonomics for the electrician leading to neck and arm strains.

• End users don’t like ceiling roses as they have to be removed to accommodate modern light fittings, leading to complex wiring and extra expense.

• Most wiring is completed on the second fix.