richardzhng 发表于 2011-12-12 19:38 3 r+ c+ v( {- d* C. o7 c0 fare you sure it is three phases and one neutral, not three phases and a ground?
) n' y$ h; Q# y, r. m- j9 o5 H"are you sure it is three phases and one neutral, not three phases and a ground?" - e4 S9 ^; n: x! q' ^+ d/ O5 u* k+ o7 m+ N$ k: n
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I am sure . Would you gave me some advice? thanks!