| link_2 = https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/968675/ds-0009-21-low-voltage-equipment-notice.pdf | | link_2 = https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/968675/ds-0009-21-low-voltage-equipment-notice.pdf |