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Issue 45 - Winter 2012
Your letters: From the Wiring Matters inbox.
Heritage buildings - applying best practice: The work of English Heritage’s specialist building services engineers is centred on the sensitive application of modern building regulations to historic buildings and monuments.
Experts highlight EV charging roadmap: A panel of industry specialists is helping to increase our understanding of electric vehicle charging infrastructures.
Wise up to section 710: Design culture within the Medical Locations sector needs to recognise the regulatory importance of Section 710 of BS7671:2008 (2011).
Floor and ceiling heating systems: A look at the requirements for the installation of electric floor and ceiling heating systems, together with the associated risks.
LEDs - Evolution and Innovation: LED lighting has developed hugely in the last few years, and the latest advances are helping to realise a flicker-free alternating current LED.
Marinas and jetties: We review the requirements for electrical installations in marinas, examining the risks associated and future European-level developments for inland navigation vessels.
PME supplies: Looking at the principles of protective multiple earthing (PME) and the issues to be considered when PME electrical supplies are used outdoors or to supply external buildings.
Opinion - Steve Brawley, Joint Industry Board: What is an electrician? Qualification and assessment procedures that have been developed by the industry provide a clear answer.
Construction site electrical installations: The role of the CDM regulations in ensuring electrical safety on construction sites.
Developments in the Code of Practice for EV charging equipment installation: A report will quantify risks associated with using a PME earth on outdoor connecting points for EV charging stations.
Changes to the IET's Code of Practice for In-service Inspection and testing: A new edition of one of the IET’s Codes of Practice aims to stem unacceptable practice in PAT testing, and in this article we look at the changes.
Changes to Appendix 4 of Amendment 1 of BS 7671:2008: Amendment 1 of the 17th edition of the Wiring Regulations brought changes to Appendix 4: selection of conductor cross-sectional area (article excludes voltage drop and fault current calculations).
Leading lights?: LED lights are being promoted as the ultimate in eco-friendly lighting. But are they as energy-efficient as we think?
Charge your engines: The electric vehicle market is gaining strength thanks to careful consideration of the future charging-point infrastructure.
Socket protectors: Socket protectors are widely available, but could they be doing more harm than good?
Energy efficiency of low-voltage electrical installations: One new area of possible development within international standards is to integrate requirements for energy efficiency into IEC 60364 (the international standard that the wiring regulations (BS 7671) are based on). In this second article we take a closer look at energy efficiency of low-voltage electrical installations.
Lifts for Firefighters: This article is provided to raise awareness of the requirements for electrical supplies for fire-fighting lifts, to discuss briefly the overall scope of Chapter 56 Safety Services of BS 7671:2008(2011) and will reference the regulatory requirements, as appropriate, to firefighting lift requirements.
Changes to the IET’s Code of Practice for In-service Inspection and Testing of Electrical Equipment (ISITEE): Major changes to the IETs Code of Practice are planned, to incorporate new industry requirements for in-service inspection and testing of electrical equipment.
Inadequate testing leads to unlawful killing verdict: The coroner at the inquest into the death of 22-year-old mother Emma Shaw asks whether anything can be done to avoid similar tragedies.
Protective Equipotential Bonding: Regulation 411.1 states that automatic disconnection of supply is a protective measure in which basic protection is provided by basic insulation of live parts or by barriers or enclosures and fault protection is provided by protective earthing, protective equipotential bonding and automatic disconnection in case of a fault.
Co-ordination of electrical devices and auxiliary circuits: Two new areas of possible development within European and International standards are Section 570 requirements for the co-ordination of electrical devices and Section 557 requirements for auxiliary circuits.
Accessibility of connections and maintenance-free junction boxes: The introduction of maintenance-free junction boxes was a small change made in the last Amendment but it is likely to have the most practical results.
Portable Appliance Testing – challenging the myths: In-service Inspection and Testing of Electrical Equipment.
Section 702 Swimming pools and other basins: The 17th Edition of the Wiring Regulations (BS 7671:2008) introduced a number of notable changes to Section 702 (Swimming pools and other basins) when it was published in 2008.
17th Edition (BS 7671:2008) incorporating Amendment No 1: Installations designed from the 1 January 2012 are to comply with Amendment number 1.
Special locations - Filling stations: Further to the Earthing article in the Autumn issue of Wiring Matters, we thought we would develop a more detailed article on a ‘special location’, in this case Filling Stations.