Question: A parallel series electric blasting circuit consists of five branches of six caps each. Holes are spaced 10 ft. (3.1 m) apart in a rectangular pattern. Cap legwire length is 24 ft (7.3 m). Each side of the cap circuit is connected by a No. 16 gauge bus wire 40 ft (12.2 m) long. The lead wires are No. 12 gauge 1200 ft (336 m) long. Find the minimum current and voltage required to safely fire this blast under normal conditions.