All electrical work should follow the safety standards in BS 7671 (the 'wiring regulations') which can be found on the British Standards Institute (BSI) website.
Dylai pob gwaith trydanol ddilyn y safonau diogelwch yn Safon Brydeinig BS7671 (y rheoliadau gosod gwifrau) y gellir dod o hyd iddynt ar wefan y Sefydliad Safonau Prydeinig.