When replacing a 100 amp utility meter socket with a 200
amp one does the 100 amp breaker also get upgraded? What about the wiring throughout the house?
No - these items do not necessarily have to be changed. However, it would be a potential
fire hazard to upgrade your 100 amp panel to a 200 amp one without upgrading the service entrance on the outside of your home
at the same time.
What would cause my electric bill to spike? The amount
of kilowatt-hours increased by 500 starting a few months ago and hasn’t decreased. I’m not using an air conditioning.
Before, my average kilowatt usage was about 350 for non-summer months, now its well over 870.
There are different things that can cause this, including short circuits, well pumps
running constantly, etc.
You can call a licensed electrician
who can do a current measurement on the branch circuits of your breaker panel. This may help to determine where the power-robbing