Electrical Systems 1 Exam 2 2023 with 100% correct answers

Standard Ratings for Transformers (written on back page of NEC) correct answers15, 30, 45 ,75, 122.5, 150, 225, 300, 500, 750, 1000 ALL IN KVA (apparent power) What are the 2 types of transformers? correct answersDry type and liquid filled type Dry type transformer correct answersCommonly indoors and outdoors For 480 - 208/120V transformers Cooling medium is air Liquid type tranformer correct answersUsed for higher voltages Cooling medium is typically oil Must have containment if indoors What is the most common transformer in buildings? (we drew this in our notes pretty recently) correct answers480V, 3 phase delta primary with a 208/120v 3 phase 4 wire wye secondary Where can transformers be mounted? correct answersFloor (needs 3.5" pad) Wall Suspended Stacked *75 KVA and smaller can be suspended or wall mounted* If you have higher voltage, you have _____ amperage. correct answersLower If you have lower voltage, you have _____ amperage. correct answersHigher