22 ELECTRIC.IE • The Magazine & Website for the Irish Electrical Industry • Industry News network. If the voltage falls outside the normal window (230 V a.c. ±10% i.e.207 V to 253 V), an open PEN condition is deemed to have occurred presenting a risk of electric shock. Upon detecting an open PEN condition, the system must automatically disconnect the supply to the EV charging point including line neutral and earth conductors. This requirement was not included in the actual published A1 amendment. Such a method of protection cannot be used in Ireland as there is no allowance anywhere in I.S.10101 for switching a protective earth conductor. ESB’s - National Code of Practice The requirements of Part 722 should be read and construed in conjunction with Annex I of the ESB’s - National Code of Practice which covers requirements for four main types of EV recharging installations i.e. (i) Home Recharging; (ii) Destination and Workplace Recharging; (iii) OnStreet Recharging and (iv)Fast and Ultra-Fast Recharging. Brendan Dervan is the author of “The Wiring Rules in Ireland, An Illustrated Guide to I.S.10101” This guidebook can be purchased directly from his website: www: besttraining.ie Figure 3 - Typical 7kW Domestic EV Supply Equipment / Charging Point. T: 042 935 9393 E: sales@kempstoncontrols.ie A: Unit 1 Coes Road, Dundalk, Co. Louth. A91 Y6FH www.kempstoncontrols.ie KEMPSTON CONTROLS*: THE ONLY PLACE TO GET EATON EMERGENCY FIRE & LIGHTING Manual Call Points & Fire Alarm Devices Exit Signage & Legends Power Supply Units & Accessories Because Nobody Likes Guessing Where The Door Is. System Monitoring & Control Equipment Emergency Luminaires *SOLE DISTRIBUTOR FOR IRELAND
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