Cov neeg tsim qauv yuav tsum xav txog cov ntsiab lus hauv qab no thaum xaiv hluav taws- cov kab hluav taws xob tiv taus raws li lawv cov yam ntxwv tshwj xeeb:
(1) Chav Kawm A hluav taws kub- cov kab hluav taws xob tiv thaiv yuav tsum yog qhov kev xaiv tseem ceeb thaum cov kab hluav taws xob tau teeb tsa rau hauv cov kab ntim khoom hnyav lossis cable mezzanines, lossis hauv thaj chaw uas muaj hluav taws kub xws li cov nyob ze cov kav dej lossis cov chaw muag roj. Class B hluav taws- cov kab hluav taws xob tiv taus yuav siv tau rau lwm lub sijhawm uas tsis yog cov uas tau hais los saum no, yog tias cov cables raug txwv.
(2) Hluav taws kub- cov kab hluav taws xob tiv thaiv feem ntau yog siv rau cov khoom siv hluav taws xob thaum muaj xwm txheej ceev thiab yuav tsum tau ua haujlwm thaum muaj hluav taws kub. Txij li thaum ambient kub nce sharply thaum lub sij hawm hluav taws kub, tus neeg xyuas pib hla -section yuav tsum tau nce los ntawm tsawg kawg yog ib tug qauv loj rau ntev muab circuits nrog nruj tso cai voltage poob txwv; qhov no ua kom muaj peev xwm kis tau tus mob txaus thiab txo qis voltage poob.
(3) Hluav taws kub- cov kab hluav taws xob tiv thaiv yuav tsum tsis txhob siv los ua cov kab hluav taws xob kub siab.
(4) Txhawm rau txo qis qhov tshwm sim ntawm kev sib koom ua ke ntawm cable tsis ua haujlwm thaum muaj hluav taws kub, tus naj npawb ntawm cov pob qij txha yuav tsum tau txo qis thaum lub sijhawm teeb tsa kom ntseeg tau tias lub voj voog txuas ntxiv ua haujlwm zoo. Yog xav tau kev sib txuas ntawm ceg, cov pob qij txha yuav tsum tau kho kom zoo nrog hluav taws kub- tiv thaiv kev ntsuas.