The Meter read LEv EL 2,changed to 02 .000000, changed to 01 059226, changed to 888 888888 8, changed to rE9, changed to 5yn c nEt and cycled through those non-stop. House was built in 1956. Interior panel doesn't have MAIN breaker. A master electrician told me I should always flip the MAIN breaker on the external panel when changing out things like a light fixture. That is what I went to do but I still had power in the house. When I flip the individual breakers on the interior panel, it 'appears' all power is off. I'm afraid to cut the wires to change out my outside light.