Never ever attempt to cut trees with downed power lines nearby. This 10 Dia. tree took down one leg of the power line on a pole in our driveway. The line was only 4 ft. from the ground with the tree pushing down. It never broke, never tripped the breaker on the pole and we never lost power. It did burn through the tree showing the power of electricity and a great reason to never, ever attempt to cut firewood around downed power lines. Also beware of the live ground gradient which could get you as you approach the tree. Be safe.
Ed
Ed