I just don't think that it's done well, currently. I mean, Boilers, yes, duh: water + hot boiler = steam; water + hot, dry boiler = earth shattering kaboom.
But electrical devices? It's more like: Correct energy supply + machine that uses electricity = shit gets done; too much energy being supplied + machine that uses electricity = melted machine at worst, have to replace a fuse or a few fuses at best; electricity sent through cables + cables graded this much power = smooth sailing; electricity sent through cables + cables are too weak for this much power = some melted cables, maybe a fire if you're unlucky as hell.(but if a fire does break out, water only makes this situation worse, but smothering it doesn't result in a much bigger fire, but once the fire has spread beyond the electrical stuff, water is fine as it's no longer a Type C fire but rather just a Type A assuming that you don't have tons of oil or petroleum based fuels lying in the open, then it's Type B, and if your fire involves a open flame and combustible metals, you're fucked as Type D fires are hell to put out unless you have a Type D solution, such as simply removing the source of Oxidizer, aka smother it with sand to prevent air from reaching it and pray that no physical oxidizers are under/in that sand)