GFCI for appliances dilemma

[don_resqcapt19]

That is 189A 3ph 208V. Well over both requirements.

It is not over the voltage requirement as that requirement is that the branch circuit voltage not exceed 150 volts to ground. A 208Y/120 volt system does not exceed 150 volts to ground.

 

[don_resqcapt19]

422.5 (A) instead of trying to list every known appliance at the time of this code cycle maybe the code panel should of said something like appliances requiring more than one utility, electric + water/gas/steam require GFCI class (A) protection. Otherwise we just have to assume they knew in advance an appliance that needs electric, water and gas connections is safe to install using a standard breaker.

The system will open in the next few weeks for the submission of Public Inputs to make changes for the 2029 code. I am looking forward to reading your public input.
Remember, in general, the code is written by the code making panel's action of the public inputs that have been submitted.

 

[curt swartz]

Where did you get 20A 3 ph from unless you posted a link to a different product. Rational makes lots of different combi ovens, some even used in homes.

-Hal

The OP stated the oven is gas. According to the link posted the gas version electrical load is 2.2KW.

 

[Elect117]

It is not over the voltage requirement as that requirement is that the branch circuit voltage not exceed 150 volts to ground. A 208Y/120 volt system does not exceed 150 volts to ground.

It is over 100A. Or at least the linked equipment.

I was saying it is over the current limitations of both requirements, 422.5 & 210.8(B).