richardzhng 发表于 2011-12-12 19:38 # b( L3 K n. @9 [! Care you sure it is three phases and one neutral, not three phases and a ground?
, J+ |* w0 A7 D
"are you sure it is three phases and one neutral, not three phases and a ground?" 6 i' G6 u' P+ B* L/ ^! U( F N6 [( T$ M$ {5 {" G- ]- k6 d9 |; p" Z- |
I am sure . Would you gave me some advice? thanks!