Helpful Tip # 106 Another formula needed for the Master’s exam is: The Square Root of (I2A + I2B + I2C) – (IA X IB) – (IB X IC) – (IC X IA) This Formula is used to calculate the “Imbalanced Load” on a Neutral in a Three Phase system. It is a complicated […]

  With the PSI exam, reading the question word for word exactly is extremely important.  Many questions are very to tricky, pay attention to wording variations. Reading the applicable NEC Article or code statue is a must, reading the question backwards is one terrific tool.  Reading the question backwards will trick your mind into reading […]