The ultimate goal of insulator washing is to prevent flashovers. When water pressure is too low while washing, there is a far greater chance of a flashover occuring. The warmer water, the lower the resistivity, the lower the resistivity the lower the overall water pressure. Thus it is very important to maintain the proper temperature for washing. Modern tests show that leakage decreases the amoung of pressure in a tank. Thus, in order to gain the most procuctivity, a resistivity monitor should be inculded in all washing equipment.
Distance and nozzle size are also factors of overall pressure released on contact. Effectivley the smaller the nozzle size, the higher the pressure. Simularly, the further water moves, the more is is dispersed, thus decreasing over all water pressure.