Class 2 with line voltage

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tdjs

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I was watching a Mike Holt video on Section 725,it was stated that you can use Class 2 circuits if you reclassified them to Class 1 by covering up the Class 2 logo on the equipment.Example:Septic tank float alarm unit 12 volt Class 2 terminals.Ran12-2UF for 120 volt for pump,14-2 UF for high level float in septic[12 volts] .These are installed in the same pvc conduit out to the septic tank junction box.Mike says I can take a Sharpie marker and cross out the Class 2 label on the alarm control which would reclassify it as a Class 1 circuit.Has anybody done this?
 
I have not done that nor do I believe I would. Sounds kinda like crossing out Sq. D and writing FPE next to it? I have a hard time believing Mike Holt told you to do that. Crossing out the word apple does not an orange make. It still "is what it is!"?
 
barbeer said:
I have not done that nor do I believe I would. Sounds kinda like crossing out Sq. D and writing FPE next to it? I have a hard time believing Mike Holt told you to do that. Crossing out the word apple does not an orange make. It still "is what it is!"?
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Take a look at Exception No. 2 to 725.130(A) (2008 NEC).

Chris
 
I see the exception, still seems kind of unorthodox. Knowing all the growing issues with listing and labelling it just does not seem acceptable to waive a magic wand(sharpie) and re-classify equipment.
 
I don't understand the complaint. If you reclassify the circuit as a class 1 circuit you now have more stringent requirements for the circuit then if it was left as a class 2 or 3 circuit.

It doesn't affect the funtion of the system just how we wire the system.

Chris
 
qcroanoke said:
Does that mean that I can pull my HVAC control wiring in the same raceway as the branch circuit?
Doesn't seem right......
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If you reclassify the power supply and use a chapter 3 wiring method in accordance with 725.46 then yes, the control wiring can be run inside the same raceway as the branch circuit conductors.

Chris
 
After we reclassify the Class 2 circuit and use Chaper 3 wiring methods, we still have equipment designed for Class 2 systems connected to the reclassified wiring system. Now have a short or a wrong connection between the power system and re-classified system. We have now energized equipment designed for 24 volts with line voltage. This is a safety hazard and the exception should have never made it into the code.
 
don_resqcapt19 said:
After we reclassify the Class 2 circuit and use Chaper 3 wiring methods, we still have equipment designed for Class 2 systems connected to the reclassified wiring system. Now have a short or a wrong connection between the power system and re-classified system. We have now energized equipment designed for 24 volts with line voltage. This is a safety hazard and the exception should have never made it into the code.
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Thank you.
 
don_resqcapt19 said:
After we reclassify the Class 2 circuit and use Chaper 3 wiring methods, we still have equipment designed for Class 2 systems connected to the reclassified wiring system. Now have a short or a wrong connection between the power system and re-classified system. We have now energized equipment designed for 24 volts with line voltage. This is a safety hazard and the exception should have never made it into the code.
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I agree Don.

Chris
 
dcspector said:
Chris I was not being a smart *** at all but the class 1,2 an 3 wiring has always confused me at best and I think it does others as well.
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I know you weren't I was just joking with you.;):)

I do agree that class 1, 2 and 3 systems and wiring can be confusing.

Chris
 
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