Hello Everybody,
I just want to check if somebody have reference in NEC code regarding the following 2 points:
1- Is it obligatory to install the Earthing Conductor in the same conduit with the 3 Phase conductor and the Neutral conductors? (Example if I have 4x300mm2 + 1x150 mm2 do we have to install the 150 mm2 single core cable in the same conduit as the 4 no. 300 mm2 conductor??) NEC code reference required please.
2- While using parallel run, is it mandatory to provide also parallel earthing conductors? (Example, if we are using 2x(4x300 mm2), is it mandatory to install 2x 150 mm2 or it is enough go for 1x150mm2) NEC code reference required also.
Thank you very much
I just want to check if somebody have reference in NEC code regarding the following 2 points:
1- Is it obligatory to install the Earthing Conductor in the same conduit with the 3 Phase conductor and the Neutral conductors? (Example if I have 4x300mm2 + 1x150 mm2 do we have to install the 150 mm2 single core cable in the same conduit as the 4 no. 300 mm2 conductor??) NEC code reference required please.
2- While using parallel run, is it mandatory to provide also parallel earthing conductors? (Example, if we are using 2x(4x300 mm2), is it mandatory to install 2x 150 mm2 or it is enough go for 1x150mm2) NEC code reference required also.
Thank you very much
