Who needs a qualified electrician
This is the results of a licensed contractor who got his license from a Cracker Jack box! The person who did this is a California Licensed electrician operating in Santa Cruz, Ca. Beware, all electricians are not qualified! Top photo, meter socket.....burnt Second photo, how he left an added service...480 volt 3 phase 70 amp per leg for a 40 foot shipping container reefer unit.........those are 480 volt service wires hanging out of the box,He left it just like this, wires hanging out, Third photo puddles of formerly molten buss bars melted by the 480 volt arcing from C phase to B phase, arc blew through high voltage insulator, 4 th photo, what's left of the main 480 volt busses in 200 amp three phase box. He upgpgraded the box in second photo from 40 amps to 70 amps, hooked up the reefer without checking wiring in reefer, it is convertible 240 /480. It was wired 240 . This is what happened! This in a machine/welding fabrication shop that is under OSHA guidance. The reefer unit was extensively damaged and the main service is destroyed. It will probably be $5000 to repair the damage here, I haven't been into my inside panels as yet as the building owner is responsible for the building service, my customer is responsible for wiring in his unit and I do the electrical in unit.
BEWARE.........not all contractors are qualified......trust and verify!