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TOPIC: Knob & Tube Question

Re: Knob & Tube Question 11 years 8 months ago #39607

Cameron, I always call out any double taps...neutrals, hots, whatever.  I've had electricians laugh at me (Everyone does it, what's the big deal)...but I still do it.

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Re: Knob & Tube Question 11 years 8 months ago #39625

If  you have mulitple wires under a single lug, both wires may not have good contact which can lead to arcing. 

Multiple wires of different sizes and the larger wire will get held by the lug but the smaller wire rattles around leading to arcing. 

Read the specific panel label.  Most allow up 2 grounds of the same AWG under a single lug.  Some allow up to 3 ground of the AWG under a single lug.

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Bruce Ramsey, ACI

Re: Knob & Tube Question 11 years 8 months ago #39647

I posted a photo on a new thread of some double taps I found yesterday along with some other gems of home owner wiring. Take a look.

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Re: Knob & Tube Question 11 years 8 months ago #39688

www.inspectapedia.com/electric/Knob_and_Tube_Wiring.htm

I am not sure if you have K&T, but I think it isn't. I see cloth covered wiring and most likely that is tin clad copper. K&T has a rubberized insulation as mentioned by the other guys.

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Re: Knob & Tube Question 11 years 8 months ago #39746

Casey...

My feelings are hurt! (Enough said)! LOL!!!

Yes... K&T has a cloth mesh jacket,

No... K&T does not (normally) have rubberized insulation,

No... K&T should never be bare wire,

Yes... that appears to be tinned copper,

No... That is not aluminum,

Yes... Aluminum has a "Plastic" type insulation,

Yes... I have seen a home re-wired utilizing the old "Knobs" and "Tubes" with THHN and no grounding wire !!! Friggin' Harry !!!

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Jeffrey R. Jonas
507.213.7468
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Re: Knob & Tube Question 11 years 8 months ago #39747

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Jeffrey R. Jonas
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