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Last edited 29 Oct 2016
According to Approved Document P - Electrical safety – Dwellings:
Low voltage is, ‘A voltage exceeding extra-low voltage, but not exceeding 1000V ac or 1500V dc between conductors, or 600V ac or 900V dc between conductors and earth.’
Where extra-low voltage is, ‘A voltage not exceeding 50V ac or 120V ripple-free dc, whether between conductors or to earth.’
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