# The Meters (Certification) Regulations 1998, Paragraph 7: Multi-register meters

Extent: E+W+S

Induction meters
(1) (a) All induction meters with more than one register shall be tested on one register in accordance with paragraphs 5 and 6 and on each and every other register at a low load using the method A, method B or method C test and at an intermediate or high load using the method A test.
(b) For the same load conditions the maximum permitted difference between the error on one register, expressed as a percentage, and the error on any other register, expressed as a percentage, is 1 per cent.
Static meters
(2) (a) All static meters with more than one register shall be tested on one register in accordance with paragraphs 5 and 6.
(b) For repaired static meters with more than one register—
(i) where the total units are the sum of all the registers, a further test shall be carried out on each and every other register using method A but
(ii) where the total units are recorded on one register, only that register is required to be tested in accordance with paragraphs 5 and 6.

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Source: https://www.legislation.gov.uk/uksi/1998/1566/schedule/1/paragraph/7 (the official version)
Page: https://openlegislation.uk/meters-certification-regulations-1998/schedule-1/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.