Gonna put in a new 200A service panel for a friend who currently only has a 100A (though the house is only 3 yrs old and the meter is rated for 200). He was thinking just a swap job, but I am wondering what is the NEC says about what wire gauge needs to be from the meter on the house to the service panel?
My friend who works for CommEd (not an installer) says they haven't changed the wire gauge for a new home in over 6yrs in this area so I know that portion is safe.
Anyone know this one?
Thanks,
Chris