Nevada Equipment Contractor (C-38) Exam Prep topics include Natural Gas Piping, LP Gas Piping, Chimneys Flues and Vents, Appliance Installation, Sizing and Estimating, Testing, Inspection and Combustion Air. Additionally, the Nevada Equipment Contractor (C-38) Exam Prep includes narrated highlighting guides, practice tests, theory, calculations, instructor support and test-taking tips and strategies. After your highlighting is completed with each book, you have the option take an online practice test to reinforce concepts presented. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information.