Each blasting cable shall be:

1. Well insulated and as long as necessary to allow the shot firer to move to a safe place around a corner;

2. Short-circuited at the battery end until it is ready to attach to the blasting unit;

3. Staggered as to length, or shall have its ends kept well separated when attached to the detonator leg wires; and

4. Kept clear of power wires and all other possible sources of active or stray electric currents.