electric_instructor
Senior Member
Question?
Your wiring an addition onto a HUGE home. However this is only a "trophy" room. BUT, it includes a "plywood" backed wall, which is intended to support an "elephants head" trophy!
You install a 12 circuit subfed panel, and the "feeder" to it. Then the "general contractor pressures you, and the inspector allows the "closing "of the wall.
You MUST allow for the "future" in order to feed the "branch circuits", from the panel.
SO, - you design a 2" EMT chase from the top of the panel, reaching beyond the upper wall plate, so that the wall can be closed. Sound familiar?
Thing is this! The panel "top" is 6' above the floor, and the wall plate is 8' 2" above the floor.
You have 11, 120 volt circuits fed using 12/2 NM cable, and it is feeding into an attic, where the temperature is expected to reach at least 125 degrees F.
What is the actual "maximum allowable ampacity" of the installed conductors?
:shock:
Your wiring an addition onto a HUGE home. However this is only a "trophy" room. BUT, it includes a "plywood" backed wall, which is intended to support an "elephants head" trophy!
You install a 12 circuit subfed panel, and the "feeder" to it. Then the "general contractor pressures you, and the inspector allows the "closing "of the wall.
You MUST allow for the "future" in order to feed the "branch circuits", from the panel.
SO, - you design a 2" EMT chase from the top of the panel, reaching beyond the upper wall plate, so that the wall can be closed. Sound familiar?
Thing is this! The panel "top" is 6' above the floor, and the wall plate is 8' 2" above the floor.
You have 11, 120 volt circuits fed using 12/2 NM cable, and it is feeding into an attic, where the temperature is expected to reach at least 125 degrees F.
What is the actual "maximum allowable ampacity" of the installed conductors?
:shock: