A conductor gets the same label at both ends, so the next person can tell what it is without tracing it.
Someone will open this again -- to add to it, to fault-find it, to shut it down safely. Whether that is five minutes of work or an afternoon is decided now, by you, with a label.
Both ends, same tag. That is the whole technique, and it is what turns a bundle of identical black cables into something readable. Consistency is what makes it work across a project rather than just within one box -- a naming method only helps if the person reading it is using the same one you were.
Check yourself: Two ends carry matching A1 tags. Is the conductor safe to work on?
Answer: No. Matching tags help tracing but do not prove absence of voltage.
A label is somebody's intention, recorded earlier. It tells you what the conductor was meant to be. Absence of voltage is established by testing it and proving the tester -- the same answer as lesson 3, arriving from a different direction.
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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