"CODE CALCULATIONS: Based on the 2020 National Electrical Code" is a textbook published by the Electrical Training Alliance in 2020. It is designed for education in the subject area of electrical codes, specifically focusing on the 2020 National Electrical Code. The book is written in English and comes in a trade paperback format, making it a convenient and practical resource for individuals looking to understand and comply with electrical code regulations. The author, Electrical Training Alliance, provides clear and comprehensive content for learners to help them in their studies.