The electric explosion of different metallic conductors was experimentally explored in a liquid at the optimum mode. The terms of the optimum mode's realization of conductors' explosion were certain, when all energy, stocked in a condenser, was entered into conductor during the first semi-period of discharge. It was discovered that specific energy, entered into conductor at the optimum mode, does not depend on conductor's sizes and parameters of discharge contour. Correlation, showing what amount of energy can be entered into conductor at the process of it's explosion at the optimum mode was got. It is shown that the size of particles, getting in the process of explosion of conductor at the optimum mode, depends only on properties of metal.