The “2023 Practical Calculations for Electricians: Exam Questions & Study Guide” is a comprehensive study guide for electricians written by Ray Holder. Published in February 2023 by Independently published, this 401-page paperback book is designed to help readers navigate through practical calculations related to electrician work. With a focus on providing exam questions and in-depth study material, this book serves as a valuable resource for individuals looking to enhance their knowledge and skills in the field of electrician calculations.