تم إضافة السؤال من قبل
Ahmed Fathy Mohamed Abdel Rahim
, Electrical Engineer - Operation and Maintenance , “KFUPM” King Fahd University of Petroleum and Minerals
تاريخ النشر: 2016/09/20
if circuit breaker feed points labled as + and _ thats mean that the device can't reversed any thing else you can reverse it normally without any problems.