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Legislation
                                   
                                   
                                   

                                  Selection and Erection of Equipment

                                   
                                   

                                  Part 5, chapters 51 to 56

                                  This part provides common rules for compliance with protection measures for safety.

                                   

                                  Residential Requirements

                                   
                                   

                                  Example
                                  Installation will conform to the requirements of the regulations including cables concealed in walls.

                                  What it means
                                  Since cables are concealed the standard gives a number of measures in 522.6.6 which are designed to protect the user from inadvertently causing a fault.

                                  Solution
                                  A variety of solutions are shown for cables concealed in walls, if the cable is mechanically protected and within the zones stated residual current protection is not required. It may be required to meet another part of the standard though.

                                   

                                   
                                   

                                  Commercial Requirements

                                   
                                   

                                  Example
                                  Installation will conform to the requirements of the regulations including cables concealed in walls, the requirements for partition walls are more exacting if they are constructed from a metallic frame.

                                  What it means
                                  Since cables are concealed the standard gives a number of measures in 522.6.6 which are designed to protect the user from inadvertently causing a fault.

                                  Solution
                                  A variety of solutions are shown for cables concealed in walls, if the cable is mechanically protected and within the zones stated residual current protection is not required. It may be required to meet another part of the standard though and if the wall is constructed using metallic parts may be the most cost effective solution.

                                   

                                   
                                   
                                    
                                   
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                                  The 17th Edition explained...

                                  Read our bite-sized guides for a breakdown of the key changes within the 17th edition wiring regulations

                                  1. Scope of the BS7671:2008
                                  2. Definitions used in BS7671:2008
                                  3. Assessment of Characteristics
                                  4. Protection for Safety
                                  5. Erection of Equipment
                                  6. Inspection and Testing
                                  7. Special Installations
                                   

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