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看了几个消防应急灯厂的产品,发现消防应急灯的两路电源共用一根零线,如图所示.本来变压器可以起到隔离作用,这样共用零线后反而存在隐患,如果火线\零线接错了,逆变输出还带电.诚请行内兄弟不吝赐教.500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/63/1272621206078290.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">
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