richardzhng 发表于 2011-12-12 19:38 " \1 i1 G: B7 }, r1 Aare you sure it is three phases and one neutral, not three phases and a ground?
4 ~3 \* E! v( q) M"are you sure it is three phases and one neutral, not three phases and a ground?" - a' a/ ]! }: y$ V q9 H- [5 n3 d S# |& ~
& s* m% c1 z9 F: {1 A
I am sure . Would you gave me some advice? thanks!