Lus piav qhia luv luv:

Qhov thib ob winding ntawm lub transformer siv los muab lub zog rau lub tshuab hluav taws xob ua haujlwm

los yog metering tiv thaiv ntaus ntawv yog nruab nrog ib tug fuse tiv thaiv ntaus ntawv thiab ib tug cable plug socket; Cov

qhov loj thiab cov duab ntawm lub qhov (socket) yog raws li American tus qauv IEEE Std 386.

txheem high voltage kawg ntawm lub qhov (socket) yog tag nrho insulated, tag nrho shielded, thiab tag nrho kaw.