I am trying to answer a question on electric application for a 30 x 40 garage with baseboard heat and about 15 120 v outlets run are compressor nothing huge, led lighting garage doors .
Choices
1 phase 3 wire 120/240v
1 phase 3 wire Y 120/208v
3 phase 4 wire y 120/208v
3 phase 4 wire y 277/480v
3 phase 4 wire delta 120/240v

If this a question from a test, answer it first and then we will help you.

Hint: Is this a residential garage or a commercial garage? Residential most often will not be 3 phase.
Hint: One of the answers given is incorrect.

One other point, in order to plan the service for this garage you must know whether the garage is attached, stand-alone or a remotes structure.

What is the calculated load for the garage - Voltage planning is just one part of the overall plan

Homework has a purpose... when it do it YOURSELF you actually learn something.

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Originally Posted by richardbowman

I am trying to answer a question on electric application for a 30 x 40 garage with baseboard heat and about 15 120 v outlets run are compressor nothing huge, led lighting garage doors .

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First off, can you translate this into English?