Image: Tubes-no-knobs
Size of this preview: 800 × 269 pixels. Other resolutions: 320 × 108 pixels | 2,255 × 759 pixels.
Original image (2,255 × 759 pixels, file size: 191 KB, MIME type: image/jpeg)
Description: An example of early knob and tube wiring. The function of a ceramic tube was to carry wire through wood joists, protecting the wire from rubbing the wood or being compressed by it.
Title: Tubes-no-knobs
Credit: Own work
Author: me
Permission: CC-BY-SA-2.5
Usage Terms: Creative Commons Attribution-Share Alike 2.5
License: CC BY-SA 2.5
License Link: http://creativecommons.org/licenses/by-sa/2.5
Attribution Required?: Yes
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