An example of early knob and tube wiring. Note ceramic tubes to carry wire through wooden joists; knob to support wire turning a corner; and (illegal) splice with more modern (1940s-era) cloth-sheathed Romex cable.
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{{Information |Description=An example of early knob and tube wiring. Note ceramic tubes to carry wire through wooden joists; knob to support wire turning a corner; and splice with more modern (1940s-era) Romex cable. |Source=me |Date=5 June 2006 |Author=