Updating 100 amp box to 200 with pass through
Hi, When we planned a new home we put the well (1993) in first. From the utility step down transformer to the service panel power company ran a 200 amp line ( 3/0 copper, underground) to a metered service panel. Unfortunately, the service panel installed was a Square D 100 amp unit instead of a 200 amp box. Now that we are finally building the house we need to continue from existing panel up to house. Questions are as follows:
1. Using the same box, can I simply replace 100 amp breaker with a 200 amp breaker?
2. Using a dummy breaker, built like a buss bar, with lugs that will accommodate 3/0 copper cable, continue on to house (underground) from well panel? House will have a 200 amp panel with no meter base in garage.
3. If I have to replace with a whole new 200 amp service panel at well what kind of panel (name) would allow me to feed well and also allow for a pass through 200 amps line to house?
I hope all of this makes sense,