Show up at a job because tvs are not working. Surge protector cord and coax had melted together. Go to garage turn a bunch of tripped breakers thinking customer had done that trying to get tv working and garage door opener. Go to plug in new coax jumper and pow, huge spark. So I break out tester I think it said hot and ground reversed. The multimeter reads 238 between hot and ground. Went no further. What do you think happend to this house?