The Junction Box Thermal Imaging Course is officially 100% complete and ready to take. This is a full 12-lesson course built to teach more than which buttons to press. It teaches you how to understand what the camera is actually showing, recognize what can fool it, compare temperatures correctly, and document findings without claiming more than the evidence supports. Inside the course, you’ll work through: - How thermal cameras produce and display an image - Emissivity, reflected temperature, distance, focus, span, and palettes - The Cup Test hands-on lab and worksheet - Shiny surfaces, reflections, cavities, glass, and viewing angle - Camera limitations and inspection blind spots - Delta T and proper temperature comparisons - A real electrical case study - Writing a report and recommendation that hold up - A 30-day practice plan - The 25-question final exam - The growing Bonus Thermal Gallery Current Access: Level 3 Right now, members can unlock the complete course by reaching Level 3 inside The Junction Box. A Buy Now option will also be available for anyone who wants to skip the wait and begin the course immediately. Here’s the important part: thermal imaging is specialty training. As The Junction Box grows and more courses are added, I plan to move this course to Level 5 or Level 6. That means this is the best time to participate in the community, reach Level 3, and start the course while it is still available at the lower unlock level. If you have ever wondered whether a thermal camera could help you find electrical problems—or whether you can trust the temperature displayed on the screen—this course was built for you. Head into the Classroom, open Thermal Imaging, and begin with Lesson 1. Learn it. See it. Solve it.

You’re helping wire a new shop. The electrical plan shows a receptacle at the workbench, so you grab a standard duplex receptacle. Then your lead asks: “Did you check what type it calls for?” ⚡ Where should you look to confirm the receptacle’s requirements? A. Only at its location on the floor plan. B. At the symbol legend and applicable notes, schedules, and details. C. At the nearest existing receptacle. D. At the size of the symbol printed on the page. Post your answer below. Have you ever caught a detail on a drawing that saved you from rework? 👇 ANSWER & EXPLANATION B — Check the legend and applicable notes, schedules, and details. The floor plan shows location and layout. The legend identifies the symbol, while other drawing information may specify the device type, mounting height, circuit, or special requirements. Before installing, make sure those pieces agree. If something is missing or conflicting, get clarification. Knowing how to find the information is just as valuable as knowing how to install the device. ⚡ The Junction Box — Connecting Electrical Concepts

Picture a sump pit beneath a loading dock. When rainwater raises the level, the pump needs to start and drain the pit. When the water drops to a safe low level, the pump needs to stop before it runs dry. The control has a HAND–OFF–AUTO selector: - AUTO: A high-level float starts the pump; a low-level float stops it. - HAND: An operator can start the pump manually, but the low-level float still stops it to protect the motor. - OFF: The pump is disabled. Your challenge: How would you arrange the controls so the low-level float stops the pump in both HAND and AUTO, while the high-level float starts it only in AUTO? Share your approach in the comments—even a quick sketch or a few sentences. There’s more than one way to design a control circuit, so let’s compare ideas.

You have a 20 amp branch circuit feeding a load that will run continuously for 3 hours or more. What is the maximum continuous load you should place on that 20 amp circuit? A. 12 amps B. 16 amps C. 20 amps D. 25 amps Here’s the important part: continuous loads are not treated the same as short-term loads. If a load is expected to run for 3 hours or more, the circuit has to be sized so it is not loaded beyond 80% of the breaker rating. Scroll down to see the answer. Click see more. So for a 20 amp circuit: 20 amps x 0.80 = 16 amps That means the correct answer is B. 16 amps. This is one of those details that shows up on code tests, apprenticeship tests, journeyman tests, and in real-world design. The math is simple, but missing the word “continuous” changes the answer. Drop a comment: Have you ever missed a test question because of one word in the problem?