BG ELECTRICAL NPR50 Nexus Metal Switched Fused Connection Unit Instruction Manual

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Wiring Accessories

Switched Fused Connection Unit

Wiring Instructions

1. Power Off

Before commencing work always isolate the power at the consumer unit / fuse box.
*Note — If your installation uses a four-lug metal. mounting box, remove the top and bottom lugs or bend fully back.

2a. Replacing an existing accessory

1. Unscrew the accessory from the wall/mounting box.

2. Note the cable connections:
   The illustration shows 1 wire of each colour connected to each terminal.
   There should be an additional connection between the mounting box earth terminal and the accessory earth terminal.

3. Unscrew each terminal to release the wire.

2b. New installation

1. Install mounting box (metal or moulded) for either flush or surface mounting, ensuring appropriate size of product (Mounting box to be purchased separately).

2. Select the most suitable entry point of the mounting box (knock-out) and route the cables through.
   If a metal box is used, a cable grommet should be fitted to the entry point.

3. Cables should be prepared so a sufficient conductor length reaches the terminals.
   Strip the ends of the individual conductors leaving an adequate length bare to enter terminals.

3. Connection (See diagram)

1. Line up the new accessory to mounting box and take note of where each terminal is located.

2. Connect each wire to the matching terminal.
   An earth connection should always be made between the mounting box earth terminal and the accessory earth terminal, where fitted.
   All bare earth wires must be sheathed with green/yellow sleeving.
   When connecting the new accessory ensure that only the bare end of the wire enters the terminal and no bare wires are visible.

3. Tighten terminal screws securely. (Do not over tighten)

4. Complete Installation & Test

1. Carefully position the accessory into the mounting box, ensuring that no wires are trapped between the plate and the wall and secure with screws (do not over tighten) then insert screw covers (optional).
2. Once the installation has been completed correctly, replace the fuse/ reset MCB (trip), switch the power back on at the consumer unit and test.

5. Replacing the Fuse

1. Using a flat Bladed screw-driver, carefully lever open the fuse carrier.

2. Pull the carrier out and replace the fuse.
   Note – the fuse carrier cannot be fully removed from the product.

3. Fit a new fuse (to BS1362) and push the carrier home so it sits flush with the surface of the frontplate.
   If the new fuse fails again, check the connected appliance as it may be faulty or the total load of 13Amps, 3120 Watts has been exceeded.
   For a 3 Amp connection unit the total load should not exceed 720 Watts.
   If in doubt consult a competent electrician.

6. Products with Cord Clamps

The flex outlet arrangement comprises a fixed portion integral to the main unit and a movable clamp portion, held in place by a screwed fixing.
The appliance cable exits through the aperture on the front/bottom face of the unit.

1. Prepare the flexible cable from the appliance as shown in the diagram.
   NOTE – The cord clamps are reversible and should be orientated to suit cable size to give proper clamping.
2. Loosen the cord grip screw fixing, remove blanking plug and pass cable through the aperture.
3. Connect wires as shown in diagram.
4. Adjust protrusion of cable in clamp so that wires are not taut and then fully tighten clamp to securely grip cable outer sheath.
   DO NOT clamp on individual wires.

IMPORTANT
The cable MUST be clamped tight on outer sheath to ensure the cable connections are not damaged or disconnected through subsequent movement of cable or appliance.

Additional Advice for Decorative Products

Fixing method varies depending on which product range is supplied.
Always ensure wall. surface is reasonably flat and smooth, with no bumps or projections. Metal frontplates WITH screw fixing holes, fix the unit to the back box using two fixing screws supplied. All Decorative products MUST have an earth connection between the frontplate and back box. Frontplates WITHOUT screw fixing holes. These products comprise main unit with integral gasket, and frontplate as separate item. Fix unit to back box using two fixing screws supplied. Clip frontplate onto main assembly, ensuring screwdriver notch is located bottom right hand corner.
To remove plate, place medium size flat bladed screwdriver in notch and lever off against gasket.

Care

To maintain the high quality appearance of decorative finish switches and sockets, BG Electrical recommend the use of a soft cloth periodically to clean the front face. When installing a decorative product please ensure that the wall is decorated, finished and free of moisture prior to installation.
BG Electrical recommends avoiding using, but not restricted to, these substances from becoming in contact with the decorative metal front-plates when cleaning or decorating:

• Adhesive tape, including low tack masking tape
• Solvents
• White spirit
• Multi surface cleaners
• Industrial multipurpose cleaning wipes
• Wet wipes

Using items like those listed above may cause a degrading effect to the front- plates lacquer/plated finish, although the function will remain unaffected.

Safety Warning

For your safety, this product must be installed in accordance with local Building Regulations. If in any doubt, or where required by the law, consult a competent person who is registered with an electrical self-certification scheme. Further information is available online or from your Local Authority.
Please read carefully and use in accordance with these safety wiring instructions. Before commencing any electrical work ensure the supply is switched off at the mains. Either by switching off the consumer unit or by removing the appropriate fuse or turning off MCB (trip). Wiring should be in accordance with the latest edition of the IET regulations (BS 7671).
To prevent fire hazard always use cable of the correct rating & type for the application.

Warning do not exceed the load rating of this device as stated on the rear of the product.
Wire Identification — Twin & Earth Cable
Note – As from 1st April 2004 new colour codes for hard wire installations were introduced.
EARTH = Green/Yellow Sleeving
NEUTRAL = Black (pre Apr 04) / Blue (after Apr 04)
LIVE = Red (pre Apr 04) / Brown (after Apr 04)

Switched Fused Connection Unit

Switched Fused Connection Unit with Cable Outlet

Switched Fused Connection Unit with Front Cable Outlet

Technical

Voltage : 220-240V ac
Frequency : 50/60Hz
Rating : 13A
Terminal capacity : 3 x 2.5mm² 3 x 4mm² 2 x 6.0mm²
Min box depth (profiled plates) : 25mm
Min box depth [flat plates) : 35mm

ASTA Approved
The ASIA quality mark is evidence that the product has been independently tested to comply with the relevant clauses of the applicable standards.

Batch Code explanation

yyWxx Manufacturing date code, year of manufacture (yy) and week of manufacture (Wxx)

Address/Helpline

Luceco PLC                      (EU) Luceco SE
Stafford Park 1                    C/ Bobinadora 1-5
Telford TF3 3BD                08302 Matara
ENGLAND                        SPAIN

If you have further technical assistance you can get in touch with our
Technical Helpline on:
+44 (0)3300 249 279
[email protected]

Environmental Protection

This symbol is known as the “Crossed-out Wheelie Bin Symbol-. When this symbol is marked on a product or battery, it means that it should not be disposed of with your general household waste. Some chemicals contained within electrical/ electronic products or batteries can be harmful to health and the environment. Only dispose of electrical/electronic/ battery items in separate collection schemes, which cater for the recovery and recycling of materials contained within. Your co-operation is vital to ensure the success of these schemes and for the protection of the environment.

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