Un-related to my other thread concerning pulling pvc for high voltage. What can be used to locate buried "live" 240v lines? I know of someone on a budget trying to find said wiring from house to outbuilding/garage. They live on left coast. Said util co wants to charge for a locate since wiring is the home owners wire. Will a metal detector work? Would a high current draw help the locate? i.e. run an electric heater, pool pump and electric oven.