richardzhng 发表于 2011-12-12 19:38 + }/ `% T f& p' t/ k7 care you sure it is three phases and one neutral, not three phases and a ground?
' Z( f& h1 Q- o$ a, |"are you sure it is three phases and one neutral, not three phases and a ground?" & I9 m3 D6 C' A5 l' L x % L' Z4 W: g) B% S5 I1 F# N) h( o g+ b, I( x! F+ G7 ~
I am sure . Would you gave me some advice? thanks!