回复：请高人指路

来源: 于 2012-11-07 06:22:57 [旧帖] [给我悄悄话] 本文已被阅读：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).