Prospective Fault Current Testing (PFC)

preview_player
Показать описание
#prospective#fault#current#testing#electrical#installation#pfc#pscc#pefc#megger#multifunction#free#training
Рекомендации по теме
Комментарии
Автор

Did you say your supply was TNS? Thought I saw earth coming out of head rather than off the sheath. Thanks

samuelhollingdale