Monga zingwe zitatu kapena zinayi zopangira mphamvu zamagetsi zidavotera 600 volts, 90 deg.C. m'malo owuma kapena amvula.
Zovomerezeka makamaka kuti zikhazikike mu tray ya chingwe pa Article 340 ya NEC.Zingwe zamtundu wa TC ndizololedwa kugwiritsidwa ntchito m'malo owopsa a Class I Division 2 pa NEC.Zingwe zitha kuyikidwa mumlengalenga waulere, m'njira zothamanga kapena maliro achindunji, m'malo amvula kapena owuma.Zingwe zonse zikagwiritsidwa ntchito molingana ndi NEC, zimakwaniritsa zofunikira za OSHA.
Woyendetsa chingwe akhoza kukhala mkuwa kapena aluminiyamu kapenazitsulo zotayidwa.Chiwerengero cha ma cores chikhoza kukhala 1, 2, 3, komanso 4 ndi 5 (4 ndi 5 nthawi zambiri zimakhala zingwe zotsika mphamvu).
Zida zankhondo zimatha kugawidwa kukhala zida zachitsulo ndi zida zachitsulo, komanso zida zopanda maginito zomwe zimagwiritsidwa ntchito pa chingwe chimodzi cha AC.