Service Panels

Question 1

Which of the following describe an AC Service Panel?
1. An electrical box, which must be directly affixed to a PV array, per NEC guidelines
2. An electrical box that is the central point of electrical distribution throughout a building
3. An electrical box that generates electricity for a building.

Answer 1

2. An electrical box that is the central point of electrical distribution throughout a building

A standard circuit breaker, located in the main AC Service Panel, is the typical point of interconnection for the majority of residential systems.

Question 2

true or false. A load-side connection refers to using a circuit breaker in the main AC Service Panel to feed the power from a PV system to the grid.

Answer 2

true

Question 3

true or false. Load-side connections are always advantageous, regardless of the incentive programs provided by a given electric utility

Answer 3

false

Question 4

Fill in the blank. A ____________ means that the PV system is connected on the utility side of the main AC service disconnecting means
1. supply-side connection
2. load-side connection

Answer 4

1. supply-side connection

The supply-side connection is also called the line-side connection, as opposed to the load-side.

Question 5

While of the following describes the 120% rule?
1. The sum of the breakers supplying power to a busbar, including PV and utility sources, must not be less than 120% of the busbar
2. The sum of the PV modules supplying power to a busbar, including PV and utility sources, must not exceed 120% of the busbar
3. The sum of the PV modules supplying power to a busbar, including PV and utility sources, must not be less than 120% of the busbar
4. The sum of the breakers supplying power to a busbar, including PV and utility sources, must not exceed 120% of the busbar

Answer 5

4. The sum of the breakers supplying power to a busbar, including PV and utility sources, must not exceed 120% of the busbar