Greetings,
We are bidding a remodel for one condo unit in a 14 story building.
The unit shares it's feeder with three other units. (one atop the next)
The feeder is 3/0 THHN and is protected by a 200 amp breaker. The feeder runs through the main lug sub-panel of each unit and is tapped w/ a # 4 THHN to the main lugs of panel.
The remodel unit has a load of aprox. 62 A and the remaining three units have an estimated load of 54 A. We are a residential company that specialize in new custom homes and this wiring method is something new to us. A builder we work with is involved in this project and has asked us to take it.
My first query is whether NEC 2005 220.84 applies for the feeder size and that my load should be aprox 100.8 after a 45% demand factor.
Secondly, the architect would like to re-locate this sub-panel more than 25' away. What advise can you share involving taps and splices?
Thanks in advance,
Rich
We are bidding a remodel for one condo unit in a 14 story building.
The unit shares it's feeder with three other units. (one atop the next)
The feeder is 3/0 THHN and is protected by a 200 amp breaker. The feeder runs through the main lug sub-panel of each unit and is tapped w/ a # 4 THHN to the main lugs of panel.
The remodel unit has a load of aprox. 62 A and the remaining three units have an estimated load of 54 A. We are a residential company that specialize in new custom homes and this wiring method is something new to us. A builder we work with is involved in this project and has asked us to take it.
My first query is whether NEC 2005 220.84 applies for the feeder size and that my load should be aprox 100.8 after a 45% demand factor.
Secondly, the architect would like to re-locate this sub-panel more than 25' away. What advise can you share involving taps and splices?
Thanks in advance,
Rich
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