Re: # of wires in wall space between studs
I never suggested a remote panel in the attic! I was suggesting it be placed where the original poster had already excavated on the second floor.
Basement to attic and return to second floor for seven circuits is a lot of wire.
The crap about service equipment panel not being rated for a sub is downright stupid.
You can run a simple 4-wire (2 hots, neutral & ground) feeder to a remote distribution 120/240 panel with a "main" breaker. There is no need to use aluminum or SER to do so, in fact it would be the most stupid choice. From there you can handle 8 or more 120 circuits. Since the Original Poster has indicated he wants 7 circuits on the second floor and he is accessing the majority via the attic this is the most logical choice. You can opt to use AFCI or GFCI breakers on this remote panel, thereby upgrading to current standards your wiring project on the second floor.
That remote panel will be fed by a double pole breaker on your present panel. Thereby reserving the other five breaker positions (7 2nd floor circuits) you would otherwise have used home-running those 2nd floor circuits to the main panel for future use as you upgrade the first floor wiring in the future.
I might add that 30 feet for a home run circuit from a basement to an attic above then dropping to a 2nd floor would be mighty short ceiling clearances (midget house!), and home running circuits from one end or the other of the house via the attic and dropping down opposite walls could make for a lot of cable and dozens of fire stop penetrations that would otherwise be unnecessary, especially since the entire first floor walls and plates are presently unaccessible as per the original poster.
Feeder for an inside the residence remote distribution panel is no more complicated than installing a 4-wire 240 appliance circuit outlet.
Last edited by Gray Watson; 10-10-2009 at 07:45 PM.
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