Electrical Exam Term
Direct Current (DC)
An electric current that flows in only one direction, as produced by batteries, solar panels, and DC power supplies.
Detailed Explanation
DC is used in batteries, solar photovoltaic systems, electronic devices, and electric vehicles. In electrical contracting, DC systems are increasingly common due to solar installations. Inverters are used to convert DC from solar panels to AC for use in buildings. Special considerations apply to DC systems regarding wire sizing, overcurrent protection, and disconnecting means.
Premium Study Material
Don't just memorize terms.
Master the exam.
Get access to 650+ exam-like questions, detailed explanations, and specific state law-supplements for your state.
Pass Guarantee
State-Specific Content
Unlimited Practice Tests
Instant Feedback
Practice QuestionEasy
Which of the following best describes the concept of Direct Current (DC)?
Start Practicing →