變壓器長開

其實變壓器有使用到電,but very very few! no need to worry.

2007-09-14 15:25:05 補充：
當然,關掉比較省電!may be fewer than several dollars for 1 year.

2007-09-14 15:31:27 補充：
平時是應該連變壓器也關掉,因為有D變壓器D安全規則沒有做完善!如果overheat有火警風險tim.

yes it will use up a little bit
if you switch off all the similar thing in home when you don;t need, you may only save for about $20 per year
by the way, they are wasted energy, you are better to switch them of while you are sleeping