Insulators waxaa laga sameeyaa walxaha DMC/BMC ee caaryada gaarka ah ee hoos yimaada heerkulka sare iyo cadaadiska sare. Insulator-ka caadiga ah oo leh koronto adkeysi oo kala duwan waa la soo saari karaa oo la soo saari karaa iyadoo loo eegayo shuruudaha isticmaaleyaasha.