I save my tree root jobs for my sub and we knock them out on Saturdays. Anyway this one was a very small bed with electrical lines, drainage, irrigation wire, and sweet gum tree roots. The pipe was broken under a good size root and under the drainage pipe. We carefully carved away what we could and finally thought we were in the clear to do some sawzall cutting. Suddenly the sawzall stopped. 30 seconds later the customers wife comes out of the house and says our power has gone out. then he pulls into the driveway. I have no idea what has happened. Turns out their was another electrical line directly under the drain that we cut with the sawzall. Fortunately it was just to pool equipment and we were able to get house power restored but not after the customer let me have it. Later he felt bad about it and gave me some leftover dog food.