Application Question Breakdown: "What is the busbar quantity?"
Application Question:

What is a busbar?
A busbar is a thick, conductive metal strip (copper or aluminum) inside an electrical panel that acts as a central hub to collect and distribute power from the main service to various circuit breakers for a building's circuits.
This is what one looks like in the field:

This is what one looks like on plans:

For the purpose of this application, you'll count and describe the ones located in the proposed solar energy system. Essentially, count any box on the plans that includes breakers that are not a backup initiation device, as that equipment has a different place on the application.
This would include, but not limited to:
- Service Panel
- A battery backed-up subpanel
- A combiner panel for inverters (common for microinverters)
- A combiner panel for batteries
Let's look at some examples:
Example: 1 Busbar - Service Panel

Example: 1 Busbar - Service Panel

Example: 2 Busbars - Service Panel and Battery backed-up subpanel

Example: 3 Busbars - Service Panel, Battery backed-up subpanel, and a combiner panel.

Example: 2 Busbars - Service Panel and a combiner panel.
