Source: https://www.scribd.com/presentation/146368338/17th-Edition-2011-Amendments
Timestamp: 2017-09-24 20:18:20
Document Index: 417333281

Matched Legal Cases: ['art 6', 'art 7', 'art 3', 'art 6', 'art 4', 'art 5']

17th Edition 2011 Amendments | Electrical Wiring | Fuse (Electrical)
17th Edition 2012
Amendments Seminar
leading to 2012
6 (cables in walls) •Part 6 now has Electrical Installation Condition Report •Part 7 changes/additions to Special Installations or Locations •Appendix 16 surge protective devices added •Appendices have changes & Appendix 11 & 12 deleted . 522.AMENDMENTS OVERVIEW •Earthing systems diagrams now in part 3 •New numbering system for UK only •Changes to fuse designations •Chapter 44 electromagnetic influences added •Changes to Reg.
2 Group 3 Insulation resistance Regulation 2 Test voltages .Regulation Numbering Part 6 Inspection & testing Chapter 61 Initial verification Section 612 Testing First Digit Second Digits Third Digits Fourth Digits Fifth Digits Part Chapter Section Group Regulation 612.3.
2 Part 4 Protection for safety Chapter 41 Protection against electric shock Actual Table Number Max. Zs .TABLES 41.
100 Group Impact AG UK Regulation only 100 series used when referring to CENELEC documents .6.Regulation Numbering UK Part 5 Selection & erection of equipment Chapter 52 Selection & erection of wiring systems Section 522 Selection & erection of wiring systems in relation to external influences 522.
4 • Original BS 88 fuses now BS 88-2 . 32A etc.2 & 41.Change to fuse designations •Removal of BS 1361 • Replaced with BS 88-3 & new ratings (ie: 16A.) • New time/current characteristic graphs in Appendix 3 • Changes to ratings means new maximum earth fault loop impedance values Tables 41.
New Fuse Designations Colour coded as BS 3036 BS 88-3 old 1361 General Purpose BS 88-2 gG System E (Bolted) General Purpose BS 88-2 gM System G (Clip In) System C BS 3036 BS 1362 .
100 Cables to be 50mm deep OR i. ii. MI OR ii. screws etc) ALL to be in safe zones Form part of a SELV or PELV circuit (NEW) Not allowed unless 50mm deep or i. iii. iv.1 .e.ii. RCD to comply with regulation 415. vi.6. must withstand penetration by nail. Enclosed in earthed metal conduit OR Enclosed in earthed trunking or ducting OR Mechanically protected (capping not sufficient. iii or iv above not complied with.iii.Changes to cables concealed in a wall or a partition 522.1. Incorporate an earthed metal covering i. Additional protection by RCD shall be provided if i.iv are achieved v.
healthcare centres etc • Areas grouped (0. dentists.2) with different requirements for each • Requirement to assess what procedures take place to be able to • Installation of insulation monitoring devices • Installation of protective conductors of maximum resistance values • Need to ensure unwanted tripping of RCD’s • Lower disconnection times • Emergency safety sources required determine groups .hospitals.1.New section 710 Medical Locations Applies to:. private clinics.
switch rooms etc.New section 729 Operating & Maintenance Gangways Applies to:. where access is restricted to skilled/instructed persons • Minimum access required. measurements given • Clearly Marked Areas • Easy access & Egress .
C2 & C3 • Electrical installation certificate inc schedule of inspection results for new work & minor electrical installation works certificate – NO CHANGE .Chapter 62 & Appendix 6 Model Forms for Certification & Reporting • New forms for periodic inspection & testing • Now issue an Electrical Installation Condition Report • Form for domestic & similar up to 100A • New schedule of inspection results & schedule of test results • New observation codes C1.
New Certification Forms .
New Forms For Certification .
rectify Immediately C2 Potentially dangerous. remedial action required as a mater of Urgency C3 Improvement recommended . Risk of Injury.New Codes on ECR’s CODES: C1 Danger exists.
Changes to Appendices Appendix 11 .Effects of Harmonic Currents on Balanced 3 Phase Systems Deleted by BS 7671:2008 (2011) moved to App.4 para.6 Appendix 12 -Voltage Drop in Consumers Installations Deleted by BS 7671:2008 (2011) moved to App. 6.5 & 5.4 . 5.4 para.
Appendix 16 (Informative) Devices for Protection Against Overvoltage • Examples of connecting Surge Protective Devices to different systems • Different types of SPD & the locations they are required .
Please feel free to email any questions you may have on the changes to BS7671. . Questions...
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