richardzhng 发表于 2011-12-12 19:38 ) X3 n" X3 [- U3 q4 Lare you sure it is three phases and one neutral, not three phases and a ground?
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"are you sure it is three phases and one neutral, not three phases and a ground?" - F) ?2 Y4 C7 Y3 K8 h- q / Q/ ?2 s, `/ U' j; b $ S9 u% E7 c0 O$ l/ H9 OI am sure . Would you gave me some advice? thanks!