Ntchito yogwira ntchito mosiyanasiyana, yogwira ntchito bwino kwambiri, yosinthika ku zovuta zogwirira ntchito.Imatha kugwira ntchito mosalekeza komanso moyenera mkati mwa kuchuluka kwa katundu wa 25%-100%, mosavuta kuthana ndi zochitika zomwe zimakhala ndi kusinthasintha kwakukulu kwa kagwiritsidwe ntchito ka mpweya, monga kupanga nyengo ndi ntchito zosinthasintha zambiri, kupewa kuwononga mphamvu chifukwa cha kukweza ndi kutsitsa katundu pafupipafupi komwe kumafunika ndi majenereta achikhalidwe okhazikika.
Phokoso lotsika kwambiri, malo ogwirira ntchito abwino kwambiri.Kuwongolera ma frequency osinthasintha kumalola chipangizochi kugwira ntchito pa liwiro lotsika mpaka lapakati. Kuphatikiza ndi mapangidwe angapo ochepetsa phokoso, mulingo wonse wa kuthamanga kwa phokoso ndi ≤70dB(A), zomwe zikukwaniritsa miyezo yapamwamba yowongolera phokoso m'mafakitale amakono.