richardzhng 发表于 2011-12-12 19:38 ) O- Z! H! n+ s. ]are you sure it is three phases and one neutral, not three phases and a ground?
; d2 E4 T. O' R, w"are you sure it is three phases and one neutral, not three phases and a ground?"! C6 i4 F/ A2 Y( f' ]* G5 `
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I am sure . Would you gave me some advice? thanks!
; f: b3 b/ r/ p如果你的是煤气炉,电源功率不大,变压器不贵。二手的就更加便宜。8 [7 L' b; z. L* p- w2 Y
如果你的是电炉,你这么做,不对不合法。没有必要省钱来使你的生意面临危险。如果你的烤箱坏了,那又要多少时间来修?损失更大。如果你自己接线引起事故,保险公司不会理赔你,而且会收到大额罚单。