Cov Hluav Taws Xob Hluav Taws Xob (EMT), tseem hu ua nyias-phab ntsa, yog cov npe sib tw hlau ntawm cov ntawv hla kev sib tshooj, uas tsis tau nyeem, thiab npe me 10 ′ ntev. 20 ′ ntev kuj muaj.
Duav los ntawm Tshooj 358 ntawm NEC, UL797, CSA C22.2 No.83.1 thiab ANSI C80.3, EMT muaj nyob hauv kev lag luam ntau thiab tsawg 1/2" txog 4" ;. Lub sab nraud thiab sab nraud yog ob qho tib si galvanized rau kev tiv thaiv xeb.
EMT raug teeb tsa los ntawm kev siv cov ntsia hlau teeb tsa lossis cov ntsia hlau txuas nrog hom txuas thiab txuas txuas.
