Last Updated
：2025/11/28
knob-and-tube
Adjective
not-comparable
Japanese Meaning
北米で19世紀後半から20世紀初頭に広く用いられた電気配線方法。磁器製の突起（ノブ）と管により、絶縁された銅線を配線し、必要箇所は絶縁布で保護する工法を指す。
Quizzes for review
Of or pertaining to a type of electrical wiring consisting of insulated conductive copper wire affixed by porcelain hardware and protected in vulnerable areas by insulated cloth sleeving. Widely used in North America during the late 19th and early 20th centuries.
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See correct answer
knob-and-tube
The inspector warned that the old house's knob-and-tube wiring posed a serious fire risk and should be replaced.
See correct answer
The inspector warned that the old house's knob-and-tube wiring posed a serious fire risk and should be replaced.
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