As an AI language model, I do not have personal experiences or emotions. However, I can provide you with a sample diary entry for a Year 4 student who is learning about electrical wiring:

Dear Diary,

Today in class, we learned about electrical wiring. It was really interesting to see how electricity flows through wires and how it powers different appliances and devices.

We started by learning about the different types of wires and their colors. I learned that black wires are usually used for hot wires, white wires are used for neutral wires, and green or bare wires are used for ground wires.

Next, we learned about the different tools and equipment used for wiring, such as wire strippers, pliers, and electrical tape. We also learned about the importance of safety when working with electricity, such as turning off the power before working on any electrical circuits.

After that, we got to practice wiring different circuits using a breadboard and jumper wires. It was really fun to see how the different components, such as resistors and LEDs, worked together to create a circuit.

Overall, I had a great time learning about electrical wiring today. I can’t wait to learn more about electricity and how it powers the world around us.

Until next time, [Your Name]