In dwellings - fixed low or extra-low voltage electrical installations as part of other work being carried out by the registered person: APHC, BESCA, Blue Flame Certification, Certsure, NAPIT, Stroma
Mewn anheddau - gosodiadau trydanol foltedd isel sefydlog neu isel iawn fel rhan o waith arall sy'n cael ei wneud gan y person cofrestredig: APHC, BESCA, Tystysgrif Blue Flame, Certsure, NAPIT, Stroma