Davebones
Senior Member
- Location
- North Of Tampa Fl
Does this switch have to be HP rated for motors over 100HP ????
430.109 ( E ) Motor Isolating Switch
- Thread starter Davebones
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I am lacking many skills when it comes to motors but I would say yes maybe based on 430.83(A)(1). I am assuming the switch is a motor controller.
cadpoint
Senior Member
- Location
- Durham, NC
Your question is kind of trick, I think there more to your question and the potential application then your stating, or gained some confusion alone the way.
I don't think you can find a ;Switch, General-Use Snap, that will be rated 100HP.
All of 439.109 must be met, If you go back to and read Article 100 and read Controller; Switch General-Use; Switch, General-Use Snap, and Switch, Motor-Circuit. Keep that in mind as you move forward to 430.81, 480.83 from what I found/recall - ratings in no case can A Switch, General-Use Snap, be used above 2 hp an less than 300 Volts.
If you read 430.109 (E), you'll need a rated Switch General-Use, not a Switch General-Use Snap.
I don't think you can find a ;Switch, General-Use Snap, that will be rated 100HP.
All of 439.109 must be met, If you go back to and read Article 100 and read Controller; Switch General-Use; Switch, General-Use Snap, and Switch, Motor-Circuit. Keep that in mind as you move forward to 430.81, 480.83 from what I found/recall - ratings in no case can A Switch, General-Use Snap, be used above 2 hp an less than 300 Volts.
If you read 430.109 (E), you'll need a rated Switch General-Use, not a Switch General-Use Snap.
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M. D.
Senior Member
I don't think so,... I found this,.. and since I could not be as articulate ,..I'll paste a link..http://books.google.com/books?id=Zl...page&q=motors over 100 hp. disconnect&f=false
Johnmcca
Senior Member
- Location
- Mid-Hudson Valley, NY
Id say no. Just labei it properly
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