When you want to retrieve data from a database, you ask for the data by using Structured Query Language, or SQL. SQL is a computer language that closely resembles English, but that database programs understand. Every query that you run uses SQL behind the scenes.
The inverter turns the DC electricity generated by the solar panels into 120-volt AC that can be put to immediate use by connecting the inverter directly to a dedicated circuit breaker in the electrical panel.
Solar panel installer salaries also vary by region. According to the Career Builder salary calculator, a solar panel installer in California makes on average $32,520 a year, while an installer in Colorado makes on average $27,684 a year. An installer in New York makes $31,846 a year, and an installer in Kansas makes $32,015 a year.