Scan QR code or get instant email to install app
Question:
What is the minimum size secondary conductor required for a 2 wire 480 volts/ 120 volts transformer rated at 2.3 KVA with 75 degrees C temperature at terminals?
A
14 AWG
explanation
Secondary transformer current = 2300 / 120 = 19.16 amperes
Refer: NEC Table 310.15(B)(16)
The suitable conductor is 14 AWG with 20 amperes capacity at 75 degrees C
Take more free practice tests for other PASSEMALL topics with our hvac practice test now!
Related Information
Comments