Ground Knob and Tube wiring?

Old 11-15-04, 02:36 PM
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Ground Knob and Tube wiring?

I just ran across a statement that Knob and Tube wiring "Cannot be grounded". Does this mean just at the main box? Or does it mean that it's also unsafe to ground at the outlet/switch boxes?

Here's the link:,00.html#
Old 11-15-04, 04:01 PM
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For the effort involved in installing a Code compliant grounding method it would be much better to install new wiring.
Old 11-15-04, 06:02 PM
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To properly ground a knob a tube you need to run wire al the way back to panel. Might as well pull whole new cable.

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