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 Post subject: Voltage Systems according to NEC
PostPosted: Mon Jun 29, 2020 8:40 am 
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Joined: Tue Jul 01, 2014 8:40 am
Posts: 94
Hi Folks

Greetings from North of the Border. Here in Canada we basically have 3 voltage range systems according to our CEC Part 1:
Extra Low Voltage- 1-30V
Low Voltage - 31-750V
High Voltage- greater than 750V

What would be the same under the NEC? I believe that you also refer to Medium voltage and Ultra High Voltage as well?

Thanks allot
Best regards

Len


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 Post subject: Re: Voltage Systems according to NEC
PostPosted: Wed Jul 15, 2020 10:35 am 

Joined: Wed Jul 15, 2020 10:28 am
Posts: 1
Hi Len,

In the U.S. nominal voltage ratings for 60Hz electric power systems above 100V are specified by ANSI C84.1

3 System Voltage Classes
3.1 Low Voltage (LV): A class of nominal system voltages 1000 volts or less.
3.2 Medium Voltage (MV): A class of nominal system voltages greater than 1000 volts and less than 100 kV.
3.3 High Voltage (HV): A class of nominal system voltages equal to or greater than 100 kV and equal to or less than 230 kV.
3.4 Extra-High Voltage (EHV): A class of nominal system voltages greater than 230 kV but less than 1000 kV.
3.5 Ultra-High Voltage (UHV): A class of nominal system voltages equal to or greater than 1000 kV.

Aloha,
Brian


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 Post subject: Re: Voltage Systems according to NEC
PostPosted: Mon Jul 20, 2020 7:29 pm 
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Joined: Tue Jul 01, 2014 8:40 am
Posts: 94
Hi Brian,

Excellent and thank you so much for the information

All the Best to you

Len


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