I will consider the wall as grounded. What is interesting is that I couldn't find any documentation searching the internet for several hours that even touched on this issues. I thought of some testing that I could do with a megger on the installation. Before doing the actual test, I megged at...
I have a 480V MCC that I am installing in electric room whose walls are composed of two layers of gypsum drywall. I am using Table 110.26 in NEC to consider working space in front of the MCC. In condition 2 of this Table, the code says to consider concrete, ceramic tile, and brick as grounded...
I have a 480 V,25 hp motor I am wanting to select the right condutors for. The FLC of the motor is 34 amps and the distance between motor and motor starter is 730 feet. When running a voltage drop calculation to determine the proper size of conductors , should I be using 34 amps as the ampacity...
