A box is not a place to put a connection. It is the thing that encloses it, and it has to be the right type for where it is and stay reachable.
Connections fail. That is why they are enclosed and why they have to remain accessible -- a splice that nobody can reach is a fault nobody can find.
Three decisions, and the third is the one that gets made by someone else later. The box type has to suit where it is going. The cover has to suit the box. And the location has to be one that stays accessible after the drywall, the ceiling and the cabinets go in -- which means thinking about the finished building, not the one you are standing in.
Check yourself: A junction box is fully enclosed behind finished drywall. Is that acceptable?
Answer: No. Do not conceal a junction box where access is required.
Access is a requirement of the installation, not a convenience. Burying the box does not remove the requirement; it just makes the installation fail it.
No card. No account needed to start. Score by topic against the 70% mark.
Written from the owner's poster for this lesson. Nothing added beyond what the poster states.
Written for Texas apprentices as free study material. The Texas apprentice licence is an application, not an exam (Occupations Code 1305.161), and nothing here counts as apprenticeship hours or continuing-education credit. VoltMark is not affiliated with, endorsed by, or sponsored by NFPA, PSI, TDLR, or any state or local licensing authority. Always follow your employer's safety programme and your supervising electrician.
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