Kitchen Appliance Voltage Ratings

[JerryHonolulu]

I am looking at large kitchen appliances that are nameplate-rated at 208/230V, single phase. Similarly, a clothes dryer. They have UL/ETL third-party certification. Is it acceptable to utilize these appliances on a 240 Volt electrical system? Does this violate the UL/ETL certification? Will they perform properly? Will the slight overvoltage be a problem? What about an appliance that is nameplate-rated for 208 Volts, not dual-voltage rated?

 

[iwire]

I am looking at large kitchen appliances that are nameplate-rated at 208/230V, single phase. Similarly, a clothes dryer. They have UL/ETL third-party certification. Is it acceptable to utilize these appliances on a 240 Volt electrical system? Does this violate the UL/ETL certification? Will they perform properly? Will the slight overvoltage be a problem? What about an appliance that is nameplate-rated for 208 Volts, not dual-voltage rated?

A 230 volt appliance rating is fine to use with a 240 volt supply.

Just like a 460 volt motor is made to be suppled by 480 volts.


On the other hand an appliance with just a 208 volt rating should not be connected to a 240 volt supply.

You may want to look at 210.6(A) before you go installing these circuits.

210.6(A) limits what you can supply in a house with 240 volt.

 

[K8MHZ]

A 230 volt appliance rating is fine to use with a 240 volt supply.

This is kind of rhetorical, but why don't the labels say 208/240 if they will work fine with a 240 volt supply?

 

[iwire]

This is kind of rhetorical, but why don't the labels say 208/240 if they will work fine with a 240 volt supply?

A darn good question and one I can only give a mediocre answer too.

I think it is supply voltage vs utilization voltage.

 

[K8MHZ]

A darn good question and one I can only give a mediocre answer too.

I think it is supply voltage vs utilization voltage.

Thanks for the chart.

Looks like 'nominal' vs. 'nameplate'.

I really don't see a reason for 'nameplate' to even exist, since 'nominal' means 'constituting a name'.

 

[iwire]

Thanks for the chart.

No problem, it is from ANSI standards.

But keep in mind it not a universal standard.