Cov kab hluav taws xob tswj yog ib hom kab hluav taws xob tiv thaiv hluav taws xob, cov khoom siv tseem ceeb ntawm cov cable no yog polyvinyl chloride, vim tias cov khoom siv no muaj kev rwb thaiv tsev zoo, cov cable no tuaj yeem ua haujlwm ib txwm nyob rau hauv qhov ntsuas 450/750 volts, yog li nws tuaj yeem tswj kev ua haujlwm. ntawm Circuit Court zoo. Kev siv cov kab hluav taws xob tswj tau dav heev, suav nrog qee lub chaw tsim khoom thiab cov lag luam mining thiab cov khoom siv hluav taws xob loj.
Cov tswj cable muaj qee qhov kev ua tau zoo, uas kuj yog vim li cas nws tuaj yeem siv dav. Ua ntej ntawm tag nrho cov, nws muaj zoo rwb thaiv tsev. Yog tias nruab nrab ntawm cov xov hlau, 1kV tsis tuaj yeem tawg 1min. Yog tias nws nyob nruab nrab ntawm tus neeg xyuas pib thiab cov ntaub thaiv npog, 3KV tsis tuaj yeem tawg rau 1min. Qhov thib ob taw tes yog lub capacitance ntawm kev ua haujlwm. Qhov nruab nrab yog li 52 degrees Fahrenheit / km. Qhov kawg uas yuav tsum tau tham yog yuav tiv thaiv li cas. Yog tias nws yog 150kHz, qhov nruab nrab ua ke lub zog tuaj yeem siab dua 69db / km.
