Our utility PECO allows double lugging on the lineside to tap for off-peak rate equipment. I also know that they evidently allow load side double lugging on the relatively new 400 amp residential services. A large meter socket that can accomodate,if needed, but doesnt require CTs is installed and feeds 2 separate panels in the homes. Each fed by 200 amp SE cable. I haven't done one yet, but I have seen quite a few. Has anyone installed one?