BV ndi waya wamtundu umodzi wa mkuwa, womwe ndi wovuta komanso wovuta kumanga, koma uli ndi mphamvu zambiri.BVR ndi mawaya amkuwa amitundu yambiri, omwe ndi ofewa komanso osavuta kumanga, koma ali ndi mphamvu zochepa.BV single-core copper wire - nthawi zambiri m'malo osasunthika, waya wa BVR ndi waya wokhazikika wa PVC wokhazikika, womwe umagwiritsidwa ntchito pomwe mawaya okhazikika amafunikira kufewa, ndipo amagwiritsidwa ntchito nthawi zina pomwe pakuyenda pang'ono.Kuonjezera apo, mphamvu yonyamulira ya BVR ya mzere wamitundu yambiri ndi yaikulu kuposa ya mzere umodzi, ndipo mtengo wake ndi wapamwamba.Nthawi zambiri, BVR angagwiritsidwe ntchito zingwe mkati nduna, popanda mphamvu yaikulu yotere, amene ndi yabwino kwa mawaya.