hamburgerpatty
Member
Specificly, does a tap from a feeder need to be landed in a OCP device or can it landed in a device disconnect or lugs.
Persuant to 240.21 (B) (1)
I believe that an OCP device is not required in this situation.
My example is;
The engineer design has a Feeder protected at 200 amps, 4/0 conductors ran to multiple floors.
On each floor there is a wireway / gutter with feeder taps not more than 10 feet of tap conductor to be landed inside a unit heater/ac unit. Each ac/heater unit has a disconnect (not an ocp device). Of course after the disconnect, there are fuses for the associated heater elements, fan motor, and compressor.
The spec calls for #8 Taps and #8 ground to each unit.
I believe this is OK, however, I'm not sure if the disconnect inside each unit needs to be in fact a ocp device or not.
Otherwise a ocp device would need to be added prior to the heater/ac unit.
Persuant to 240.21 (B) (1)
I believe that an OCP device is not required in this situation.
My example is;
The engineer design has a Feeder protected at 200 amps, 4/0 conductors ran to multiple floors.
On each floor there is a wireway / gutter with feeder taps not more than 10 feet of tap conductor to be landed inside a unit heater/ac unit. Each ac/heater unit has a disconnect (not an ocp device). Of course after the disconnect, there are fuses for the associated heater elements, fan motor, and compressor.
The spec calls for #8 Taps and #8 ground to each unit.
I believe this is OK, however, I'm not sure if the disconnect inside each unit needs to be in fact a ocp device or not.
Otherwise a ocp device would need to be added prior to the heater/ac unit.