20 ELECTRIC.IE • The Magazine & Website for the Irish Electrical Industry • Industry News Amendments to the National Rules for Electrical Installations Amendment A1 2024 to I.S.10101:2020 Introduction Amendment A1 of I.S.10101:2020 was published by NSAI in September 2024. The amended standard is now referred to as I.S.10101:2020+A1:2024/AC2:2025. The main changes are listed below: • Part 718 - “Communal Facilities and Workplaces - This a new section in Chapter 7. • Part 722 - “Supply of Electric Vehicle” – Completely rewritten but limited changes. • Annex 8A - “Energy Efficiency” has been changed to Chapter 8 Energy Efficiency with a new section on Prosumers Electrical installations. Other changes include minor modification to a number of clauses which are listed on the NSAIs website: https://www.nsai.ie. It is worth mentioning one of these changes i.e. Rule 551.9.3 where the rating of an RCD used as the input from a microgenerator has changed from 30mA to 100mA. “AC2 2025” refers to a minor correction to Table 6E1. This can be downloaded as a Brendan Dervan explores key amendments introduced in I.S.10101:2020+A1:2024/AC2:2025 offering insight into their implications for electrical professionals. About the Author Brendan Dervan is a Chartered Engineer with over 45 years’ experience in Building Services. He was the founder of Dervan Engineering Consultants (DEC) established in 1999. The Company provided M&E consultancy and project management services to a diverse range of clients in multiple sectors. In 2016 his practice merged with Cundall, a global multi-disciplinary engineering consultancy firm. He retired from mainstream consultancy in 2019 and set up Best Training. He is a member of the Electrical Division of Engineer’s Ireland and from 2020 to 2023 represented them on NSAI’s ETC/TC 02 committee which oversees the development of the Wiring Rules. He is the author of “The Wiring Rules in Ireland, an Illustrated Guide to I.S.10101”. See details on Page 23. He provides specialist CPD courses on a wide range of topics to consulting engineers, contractors, public bodies etc. For further information on these training courses please visit: www.besttraining.ie Brendan Dervan, Chartered Engineer. PDF from the NSAI's website. This article deals with the changes to Parts 718 and 722. Chapter 8 Energy Efficiency including Prosumers Electrical installations will be discussed in the September October Issue. Communal Facilities and Workplaces – (718) Introduction Section 718 provides additional requirements for electrical installations in communal facilities and workplaces. Typical examples of such locations include assembly halls, assembly rooms; exhibition halls; theatres and cinemas; sports arenas; sales areas; restaurants; hotels, guest houses; residential care homes; schools; enclosed car parks; meeting places; swimming halls; airports, railway stations; highrise buildings; workshops; factories and industrial plants. The scope is far reaching and covers almost every type of building beyond a dwelling. The risks associated with electrical installations in such locations are not defined in the Standard but possibly relate to their complexity compared to other buildings. For example isolation of the electricity supply may be more complex, there may be a higher density of people or escape routes may be longer and more complex. The following are some of the key issues in Section 718 Condition of Evacuation in an Emergency (718.422) For communal facilities and workplaces the appropriate “Condition of Evacuation in an Emergency” shall be established and the appropriate clauses of Part 42 taken into account. These range from “BD1 - Low density easy to exit” to “BD4 - High density difficult to exit”. Such an assessment should perhaps be made in consultation with the fire consultant for the project. Figure 1 - Requirements for Max Distances for Isolation.
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