http://www.legislation.gov.uk/nisr/2012/381/section/6/madeTHE ELECTRICITY SAFETY, QUALITY AND CONTINUITY REGULATIONS (NORTHERN IRELAND) 2012Dangerous animalsElectrical installation and servicingenGovernment Printer for Northern Ireland2014-10-07ELECTRICITY These Regulations replace the Electricity Supply Regulations (Northern Ireland) 1991 (S.R. 1991 No. 536) and the subsequent amendment (S.R. 1993/21). PART 2 6 A generator or distributor shall be responsible for the application of such protective devices to their network as will, so far as is reasonably practicable, prevent any current, including any leakage to earth, from flowing in any part of their network for such a period that that part of their network can no longer carry that current without danger.