1. If lower side is radial circuit or week end ( There is no source connected and only incoming) Higer side all protection should trip the lower side and Higer side CB Open contact no need to trip the lower CB.
2. Protection should trip both TEST and Service condition.
3. PD -2 BF -2 should trip adjacent CB and CB should be service conditions.
2. Protection should trip both TEST and Service condition.
3. PD -2 BF -2 should trip adjacent CB and CB should be service conditions.
