Probable Effect Concentration Quotients (PECQS) Practice Test

According to PEC standards, which of the following practices is not recommended?

1. Making splices within a luminaire

2. Using cords of sufficient length for flexibility

3. Installing non-heating conductors at junction boxes

4. Running cords through walls for convenience

The correct answer is: Making splices within a luminaire

Making splices within a luminaire is not a recommended practice according to PEC standards because it can create safety hazards and potential failure points in the electrical system. Splicing wires inside a luminaire can lead to overheating, increased resistance at the splice points, and can also pose a risk of electrical shock or fire if not done properly. Proper installation guidelines stress that connections should be made in designated junction boxes or outside the luminaire to ensure both safety and accessibility for maintenance. In contrast, using cords of sufficient length for flexibility is encouraged as it allows for ease of movement and avoids stress on connections. Installing non-heating conductors at junction boxes is a sound practice that prevents any risk of overheating, and running cords through walls for convenience, while generally not recommended for permanent solutions, may sometimes be acceptable if done to meet specific code requirements under controlled conditions. Overall, the guidance around electrical installation is aimed at maximizing safety and efficiency, making the splicing of wires within luminaires a practice to avoid.