Cov khoom xa tawm lub thawv yog feem ntau categorized los ntawm lawv lub hom phiaj thiab lub zog ntsuas. Hom Hom yog suav nrog cov hauv qab no:
Qauv 〡 Lub Hom Phiaj 〡 Kev Ntsuas Hluav Taws Xob
Gck 〡 Tsawg - voltage xa tawm 〡 1000v thiab hauv qab no
GCS 〡 Nruab Nrab -} voltage muab faib 〡 3-10Kv
MNS 〡 Tsawg -} voltage xa tawm 〡 1000v thiab hauv qab no
GGD 〡 Tsawg -} voltage muab faib 〡 380V
PZ30 〡 Cov Teeb Meem Tsev Neeg Teeb Pom Kev Teeb Meem Circuit Court 〡 220V