Charts have me doubting my math skills.
Would one our more learned members step me thru the formula to determine the available fault current for a 150 kva 480Y/277 transformer, 3.1% impedance and assuming infinite primary.
My math gave me 5900 but a chart I have shows 11,000. One or both is/are wrong.
Would one our more learned members step me thru the formula to determine the available fault current for a 150 kva 480Y/277 transformer, 3.1% impedance and assuming infinite primary.
My math gave me 5900 but a chart I have shows 11,000. One or both is/are wrong.