Raws li tus neeg siv yuav tsum tau, raws li qhov loj ntawm cov duab kos, nws tau ua tiav rau hauv ntau qhov tshwj xeeb ntawm cov ntawv raj thiab kaum lub nplhaib rau cov rwb thaiv tsev ntawm transformers ntawm 110KV thiab saum toj no.
