回複：請高人指路

來源: 於 2012-11-07 06:22:57 [舊帖] [給我悄悄話] 本文已被閱讀：次

why buy two new panels.  swap them if the total load to the sub panel is < 100 amp, else, buy one new 200 amp panel as your sub (make sure the interconnecting wirings are rated for 200 amp).