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BG Circuit Protection
  • Smooth finish enables easy cleaning
  • Rigid robust construction
  • UV stable, will not discolour with sunlight or age
  • Hooded trunking entry enables neat flush finish to wall
  • Easy cable entry on all sides and rear, via standard trunking cut-outs
  • Easy fit cover provides quick fit to base & caters for uneven wall surfaces
  • Quick removal of cover using 1/4 turn combi screws
  • With a solid downward opening visor to cover devices
  • Fast fit to wall using keyholes & integral spirit level
  • One height floating busbar, can be cut to any length for any consumer unit configuration
  • Fast release of DIN rail using key holes
  • Optional 5 point fixing of base caters for uneven walls
  • Large accessible wiring space
  • Captive backed out terminals
  • Large high torque terminal screws & fitted cable crimps
  • Option to provide high integrity solutions
FOR 17TH EDITION COMPLIANT INSTALLATIONS

Since 1st July 2008 the 17th Edition Wiring Regulations has required the installation of ‘Additional Protection’, by means of 30mA RCDs on many circuits which previously may not have needed protection by RCDs.

It is important that a single fault does not inconvenience or cause increased danger for others, e.g. lights going out if fault on a socket. Therefore, the use of more than one RCD is required. Different types and sizes of property, will require different design considerations, and different equipment can
enable some circuits to be grouped together on one RCD.
Whereas other circuits may require a dedicated supply, e.g. smoke alarms and warden call.

British Standard and IEE Regulations are subject to change, please always refer to the latest standards for all types of electrical design and installation work.

BG offers a variety of circuit protection solutions, that will help the designer and installer to comply and meet these new regulations.

The following areas require additional protection by an RCD not exceeding 30mA:-

i) Socket Outlets (section 411.3.3)
- All sockets up to 20A - All mobile equipment up to 32A, used outdoors
- Exceptions are socket outlets under supervision of someone skilled/instructing, and labelled socket, e.g. ‘Freezer’.

ii) Cables buried in walls (section 522)
- All cables concealed in a wall/partition less than 50mm depth, and without earthed mechanical protection, e.g. earthed metal conduit.

iii) Location containing a bath or a shower (section 701.411.3.3)
- All circuits within these locations must have additional protection by an RCD.

iv) Installations to be divided (section 314)
- All circuits of an installation should not be connected to a single RCD. This avoids hazards and minimises inconvenience to others by reducing unwanted tripping.

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BSI
BG CONSUMER UNIT OPTIONS
Possible consumer unit options to support 17th Edition Wiring Regulations compliance.

Note: the following diagrams use a 16 module consumer unit to demonstrate the available options.		 Consumer Units in 4 sizes
   
Main Switch

1. Main Switch

  • Main switch plus the use of RCBOs for every circuit
Split Load

2. Split Load

  • Some circuits using MCB's protected by an RCD
  • Other independent circuits using RCBOs
Dual RCD

3. Dual RCD

  • Some circuits using MCB's protected by an RCD1
  • Some circuits using MCB's protected by an RCD2
High Integrity Dual RCD

4. High Integrity Dual RCD

  • Some circuits using MCB's protected by an RCD1
  • Some circuits using MCB's protected by an RCD2
  • Other independent circuits using RCBOs
    Standard Dual RCD consumer unit offers option of High Integrity Dual RCD as standard.
High Integrity Triple RCD

5. High Integrity Triple RCD*

  • Some circuits using MCB's protected by an RCD1
  • Some circuits using MCB's protected by an RCD2
  • Some circuits using MCB's protected by an RCD3
  • Other independent circuits using RCBOs
    *Only suitable for 22 module consumer unit