Ivacuum yegumbi lokucima i-arc kufuneka lihlolwe ngamaxesha athile kwinkonzo, indlela yile: vula iTshintsho, sebenzisa amandla ombane wamaza ombane angama-42kV kwikhefu lawo elivuliweyo, ukuba uyaqhubeka.
Imbonakalo ye-flash-over phenomena, igumbi lokucima i-arc kufuneka litshintshwe libe litsha.