What is the function of the part marked ‘X’ in the electric system?

🎲 Try a Random Question  |  Total Questions in Quiz: 26  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
Electronic Mechanic Practice Test: Solar Power (Renewable Energy System) — practice the complete quiz, review flashcards, or try a random question.


What is the function of the part marked ‘X’ in the electric system?<br><img src='https://www.fatskills.com/images4/BS/electronic-mechanic-solar-power-25.GIF'>