SCEngineer
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Fellow Engineers,
I am currently designing a shopping center with multiple buildings. The incoming power is 480/277V, and in most cases we have step down transformers for 208/120V tenant panels. My question is do I rate the transformers for 480V before the step down, or do I rate them at the highest possible demand of the 208V panels? Any help would be greatly appreciated. Thank you.
I am currently designing a shopping center with multiple buildings. The incoming power is 480/277V, and in most cases we have step down transformers for 208/120V tenant panels. My question is do I rate the transformers for 480V before the step down, or do I rate them at the highest possible demand of the 208V panels? Any help would be greatly appreciated. Thank you.