I'm working on a project to get power to a carport and set of storage sheds that are part of a 4-plex of condominiums. The only practical way to get power from the main building is to install a load center next to the 4-pack meter base. Each section of the base has a 125 Amp main breaker and the panel has a side knockout. I am planning to locate a small (125 Amp) outdoor load center next to the meter base and splice into the feeder of one of the condo units using a pre-insulated splice block (like a Polaris IPL series). The meter base is quite large and there is plenty of room for a splice. I have gotten conflicting advice on whether or not doing a splice in a meter panel is a code violation. One individual suggested using a lug doubler on the main breaker, but this appears to be a hard item to find.
Any input would be appreciated.