The results of underwater electrical wire explosions using a microsecond and nanosecond generators are reported. It was shown that the increase in the rate of the energy input into exploding wire allows one to increase wire temperature and amplitude of shock waves. Estimated energy deposition into Cu and Al wire material of up to 200eV/atom was achieved. The analysis of the emitted radiation showed that black body approximation cannot be used for characterization of exploding wire radiation. It was shown that approx15percent of the deposited energy is transferred into the water flow mechanical energy. Also, it was shown that converging shock waves formed by explosion of cylindrical wire arrays can be used to achieve pressure up to 250 kbar at the axis of implosion.
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