Electric.ie March/April 2020

58 ELECTRIC.IE • The Magazine & Website for the Irish Electrical Industry • Industry News I.S. 10101 - A Summary of the Key Changes • I.S. 10101 – General The layout and structure of the document differs from the current Wiring Rules. For example, what were previously known as “Parts” (i.e. Parts 1-7) in ET 101:2008 are being re-labelled as “Chapters” in I.S. 10101:2020. This change will serve to enhance readability of the document into the future. • I.S. 10101 – Chapter 1: Scope Chapter 1 is largely unchanged. The scope includes the fixed wiring installation right up to the electric socket or isolator. The requirements for appliances connecting into electrical sockets, or wired into isolators, are covered by separate standards, and not by the National Rules for Electrical Installations. The document includes more detailed information on design of electrical installations and so will a very useful reference for design teams. • I.S. 10101 – Chapter 2: Definitions Definitions are now all contained in Chapter 2 to enhance readability. The definitions list has been expanded and certain definitions have been modified to align with the definitions provided in the International Electrotechnical Vocabulary. • I.S. 10101 – Chapter 3: General Characteristics This section has been expanded to cover different supply and earthing arrangements. • I.S. 10101 – Chapter 4: Protection for Safety Clause 411.3.4 Residual Current Devices (RCDs) will now be required to be installed on lighting circuits in domestic premises. Clause 421.7 Arc Fault Detection Devices (AFDDs) will now be recommended for circuits installed in locations with particular risk, such as: ‒ in premises with sleeping accommodation; ‒ in locations with risks of fire due to the nature of processed or stored materials, i.e. BE2 locations, (e.g. barns, wood- working shops, stores of combustible materials); ‒ in locations with combustible constructional materials, (example = wooden buildings); ‒ in fire propagating structures; ‒ in locations with endangering of irreplaceable goods. • I.S. 10101 – Chapter 5: Selection and Erection of Equipment Clause 512.1.5 Compatibility The above Clause will require, on request, a sign off by the appropriate person, that the installation complies with the Electromagnetic Compatibility (EMC) Directive 2014/30/EU. This applies only to the fixed wiring and switchgear, and not to any appliance connected after the isolator or socket. Clause 527 Selection and Erection of wiring systems to minimise the spread of fire The Clause requires all cables, as a minimum, to be rated Class Dca-s2, d2, a2 in accordance with I.S. EN 50575. Clause 531.3.3 Types of RCD's Residual current devices (RCDs) Type AC are not recommended in new installations. Clause 534 Devices for protection against overvoltage This is a completely new section; which provides details on the selection of Surge Protection Devices (SPDs) including wiring diagrams, especially where lightning protection will be installed in a building. • I.S. 10101 – Chapter 6: Verification and Certification Chapter 6 has been completely revised to align with the European Standard. Model certificates have now been removed. As previously mentioned, CRU now oversees the inspection and verification process, and certificates are issued by Safe Electric. It is necessary to highlight that certification will transition to an online format and it is for this reason model certificates are no longer included in the Standard. • I.S. 10101 – Chapter 7: Special Installations or Locations The associated CENELEC 60364 series of HDs have been updated and this is now reflected in I.S. 10101:2020 Part 710 Installations in Medical Locations Part 710 has been revised to reflect changes in the European requirements (HD 60364-7- 710:2012) and contains several changes including: • Clause 710.411.6.3.101 Now requires an assessment of "other electrical equipment" before being used in the patient environment.