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Old 08-29-2010, 02:27 PM   #16
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How to wire momentary switch in house?


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Originally Posted by hayewe farm View Post
210.19(4) Exception No. 2 Fixture wires and flexible cords shall be permitted to be smaller than 14 AWG as permitted by 240.5

240.5(B)(2) Fixture Wire. Fixture wire shall be permitted to be tapped to a branch-circuit conductor of a branch circuit in accordance with the following:
(1) 20-ampere circuits-18 AWG, up to 15 m (50 ft) of run length.


402.10 Fixture wires shall be permitted (1) for installation in luminaries and in similar equipment where enclosed or protected and not subject to bending or twisting in use, or (2) for connecting luminaries to the branch-circuit conductors supplying the luminaries.
 
Very good.

Now, you do realize that fixture wires must be of a type listed as fixture wire. THHN, THWN, NM, and just about any other commonly used wire is not acceptable as fixture wire, right?

OP also still needs to mount the switch in an appropriate enclosure and connect with a proper conduit system as fixture wire is not designed to be run without the protection afforded by a conduit system.

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Old 08-29-2010, 03:21 PM   #17
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How to wire momentary switch in house?


The usage proposed does not meet the definition of a fixture wire. The wiring to the switch must match the size of the overcurrent protection for that circuit.
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Old 08-29-2010, 03:38 PM   #18
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How to wire momentary switch in house?


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The usage proposed does not meet the definition of a fixture wire. The wiring to the switch must match the size of the overcurrent protection for that circuit.
I disagree. the 240.5(B)(2) specifically allows #18 to be connected to a 20 amp circuit for up to a 50 foot length. It does not apply any other limitations to being able to be installed as such.

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