{
  "url": "https://openlegislation.uk/meters-certification-regulations-northern-ireland-1998/schedule-4",
  "json_url": "https://openlegislation.uk/meters-certification-regulations-northern-ireland-1998/schedule-4.json",
  "legislation": "nisr/1998/444",
  "legislation_title": "Meters (Certification) Regulations (Northern Ireland) 1998",
  "legislation_url": "https://openlegislation.uk/meters-certification-regulations-northern-ireland-1998",
  "path": "schedule/4",
  "kind": "schedule",
  "number": "4",
  "heading": "Prescribed periods of certification",
  "text": "Type\nPhase\nWire\nElement\nNumber of Registers\nApproval Number\nCertification Period in Years\n1\n2\n3\n4\n5\n6\n7\nNote:—\n*indicates that the meter is designed for use on a 1, 2 or 3 phase supply\n@indicates that the meter is designed for use on a 3 or 4 wire supply\n#indicates that the meter is designed for use on a 2, 3 or 4 wire supply\nABB\nM81\n1\n2\n1\nSingle\n846\n10\nT81\n3\n4\n3\nSingle\n845\n10\nAmpy\n5028\n1\n2\n1\nMulti\n789\n10\n5028L\n1\n2\n1\nSingle\n820\n10\n5054\n1\n2\n2\nMulti\n824\n10\n5054C\n1\n2\n2\nMulti\n814\n10\n5056\n1\n2\n1\nMulti\n817\n10\n5057\n3\nMulti\n866\n10\n5071\n1\n2\n1\nMulti\n853\n10\n5077\n1\n2\n1\nMulti\n860\n10\nAron\neI\n1\n2\n1\nSingle\n334\n15\neN\n1\n2\n1\nSingle\n465\n15\nG13\n1\n3\n2\nSingle\n442\n15\nG13P\n1\n3\n2\nSingle\n442\n10\nG23\n2\n3\n2\nSingle\n442\n15\nG23P\n2\n3\n2\nSingle\n442\n10\nG24\n2\n4\n2\nSingle\n442\n15\nG24P\n2\n4\n2\nSingle\n442\n10\nG33\n3\n3\n3\nSingle\n442\n15\nG33P\n3\n3\n2\nSingle\n442\n10\nG34\n3\n4\n3\nSingle\n442\n15\nG34P\n3\n4\n3\nSingle\n448\n10\nGM13\n1\n3\n2\nSingle\n448\n15\nGM13P\n1\n3\n2\nSingle\n448\n10\nGM23\n2\n3\n2\nSingle\n448\n15\nGM23P\n2\n3\n2\nSingle\n448\n10\nGM24\n2\n4\n2\nSingle\n448\n15\nGM24P\n2\n4\n2\nSingle\n448\n10\nGM33\n3\n3\n2\nSingle\n448\n15\nGM33P\n3\n3\n2\nSingle\n448\n10\nGM34\n3\n4\n3\nSingle\n448\n15\nGM34P\n3\n4\n3\nSingle\n448\n10\nGTM13\n1\n3\n2\nSingle\n448\n15\nGTM13P\n1\n3\n2\nSingle\n448\n10\nGTM23\n2\n3\n2\nSingle\n448\n15\nGTM23P\n2\n3\n2\nSingle\n448\n10\nGTM24\n2\n4\n2\nSingle\n448\n15\nGTM24P\n2\n4\n2\nSingle\n448\n10\nGTM33\n3\n3\n2\nSingle\n448\n15\nGTM33P\n3\n3\n2\nSingle\n448\n10\nGTM34\n3\n4\n3\nSingle\n448\n15\nGTM34P\n3\n4\n3\nSingle\n448\n10\nCEWE\n2243\n3\n3\n2\nMulti\n841\n10\n2343\n3\n4\n3\nMulti\n839\n10\n3243\n3\n3\n2\nMulti\n842\n10\n3343\n3\n4\n3\nMulti\n840\n10\nCE\n3\n3\n2\nSingle\n796\n10\nCE\n3\n3\n2\nSingle\n791\n10\nCE\n3\n4\n3\nSingle\n795\n10\nCE\n3\n4\n3\nSingle\n790\n10\nChamberlain 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3000 N\n1\n2\n1\nSingle\n859\n10",
  "extent": "N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 4 in operation at 1.2.1999, see reg. 1"
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "*indicates that the meter is designed for use on a 1, 2 or 3 phase supply"
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "@indicates that the meter is designed for use on a 3 or 4 wire supply"
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "#indicates that the meter is designed for use on a 2, 3 or 4 wire supply"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/1998/444/schedule/4",
    "retrieved_at": "2026-10-29T02:21:52.995521+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}