A.25 B.40 C.75
A.1:28 B.1:2.8 C.1:280
A.1m3 B.2m3 C.0.2m3
A.過壓/過流/過負荷 B.漏電/過流/接地 C.綜保/短路/斷相
A.10 B.8 C.6