We have a project that will combine several older electrical services into a single new service entrance panel. There will also be several remote panels that will be removed from a service that remains and reconnected to the new service. The panels are very old and the panel tag does not have a listed AIC rating. There is also not a main breaker as they are MLO (at least for the remote panels). How is this typically handled to make sure the panel can safely be connected to the new system?