richardzhng 发表于 2011-12-12 19:38 + [( P/ {! r. \' y' R
are you sure it is three phases and one neutral, not three phases and a ground?
: E% H7 I% ?# Z V6 B# K3 i# ~! v O"are you sure it is three phases and one neutral, not three phases and a ground?" 3 f! [8 S3 {' ^1 e- F . ~5 A, B2 V; v2 ? v7 g$ H7 J1 D& i/ r( E2 q; o: ]0 Y& f
I am sure . Would you gave me some advice? thanks!