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Please re-watch the video from Lesson 1:

https://www.youtube.com/watch?v=r50ECWepd6M

PL.₁

Then, answer the following questions related to the lesson topics.

Read below for video transcript of "How Solar Works."/nHow Solar Works

As shown in the video, a solar array can be installed on a rooftop for residential application. After all mechanical holding

structures are installed on the roof, the solar panels can be fastened to it [0.05-0.10]. When the sun shines on PV panels,

photons are converted into electrons that form electrical current when it moves towards the circuit terminals [0.11-0.20].

The electrical DC current then travels through conduits down towards a power conditioning unit (AKA inverter) [0.21-

0.29]. The current is converted to AC electrical current and travels through an AC disconnect box [0.30-0.33]. When the

AC current exits the disconnect box, it goes through a PV production meter to count energy generated [0.30-0.36]. After

that, the current is backfed to the lower side of the Main distribution panel (DP), where all load circuits are connected,

through a protection breakers [0.37-0.39]. When the PV array is generating power, the load circuits draw power from the

PV array instead of the grid [0.40-0.43]. While the PV array is generating power, the monitoring device is transmitting the

data to an online portfolio, where clients can see their instantaneous PV array performance online [0.44-0.51]. Finally, the

> excess energy generated from the PV array is returned to the utility grid [0.52-0.58]./nFrom owner's perspective, Roof mount systems are preferred because :

The installation utilizes unused spaces

O The BOS cost are minimal

O The system is more secure (not easy access to theft)

O All of the above

Fig: 1

Fig: 2

Fig: 3