DonL, your expectations are right. I am planning to upgrade the main panel from 100A to 150A, adding subpanel to increase an ammount of avalable circuit breakers.
Need extra capacity for additional electrical water boiler, installing cental air, additional circuits to finish up basement.
I found the supplier to get 1" felixible metal conduit in a small quantity. Will this right, correctly, to strictly follow NEC.
I called my electrical provider company and got the similar answer as some others reported (they asked their service providers) on the web asking about upgrading service from 100A to higher.
The inspector over the phone told me that no worry, go ahead and use 150A or even 200A panel, since they assume that my load will never be continuous for such highger rate. Service will support this.
I am aslo adding an additional GND rod, spaced 11' from original one, 6 gauge solid copper coonects to the meter box. Also will beef up wires from meter box to main panel using 2/0 copper wires.