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Joined: Aug 2002
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Regarding clamps for non-metallic cable, what do the "N" and "T" mean?
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Joined: Nov 2000
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The N stands for Non-metallic Cable
The T stands for "tubing" and is a reference to Loom tubing.
These clamps are listed for both NM cable and Loom.
Hence the name "Loom Clamps"...
-Virgil Residential/Commercial Inspector 5 Star Inspections Member IAEI
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Joined: Dec 2002
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T stands for tube or loam(???), are those holes big enough to get two K and T wires in one hole with the tube. As you know you cannot separate the wires ie one per hole because of inductive heating. just my 2 cents.
WOC
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Joined: Mar 2001
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K&T wiring normally is separated throughout the system and it enters boxes via 2 separate holes. I'm not sure that there is enough separation of the wires in small wall cases to cause inductive heating problems, which is also of course related to the amount of current flowing.
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Joined: Aug 2002
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As you know you cannot separate the wires ie one per hole because of inductive heating. Could you elaborate on this? I don't understand. How can separating wires cause heating? I thought you had to derate when you bunched up wires because that is when they can potentially start heating up.
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Joined: Oct 2000
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Sven,
That's a good Tech Area question.
Bill
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Joined: Feb 2002
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You are suppose to cut the notch out between the two holes in order to reduce the magnetic build up between the 2-K&T wires. This way each K&T wire enter the box through it's own space.
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Joined: Aug 2002
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Thanks for the replies.
...The things one can learn on this board!!!!
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Joined: Oct 2000
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Bill
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