Commercial Dishwasher

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Malywr said:
da670a7e9dc6d45224470a1b662d9e52.jpg

That is the panel i found 3 ct not used they will be 3 ph spot for 3 ph breaker


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NQ panel like I was saying can have bus configured most any way you wish on a factory assembly order.

What are the chances that happened here, IDK. My best guess with only as many single pole breakers as there and no pattern of skipping every third space - is likely a 208/120 supply. Two and three pole breakers are all located in bottom portion could make one suspect single phase arrangement in higher positions and three phase in lower positions but there also is a group of single poles and no skipping spaces at the bottom left so it is likely standard three phase bus arrangement and not a high leg supply.
 
Cursitti said:
Could you get a breaker enclosure with a 3 pole gfci breaker from another manufacturer?
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If the over 150 volts to ground actually is an issue, likely not. AFAIK Class A type GFCI's are all listed for 120 volts to ground (nominal) max.

Would require a SPGFCI device for over 150 to ground. Which wouldn't be prohibited but also not required for this application. None of the 210.8 requirements go beyond a class A GFCI device and no application outside of class A GFCI capabilities is covered by 210.8. Keep in mind the appliances covered in (D) used to be in art 422, not all but what there was moved to 210.8(D) along with some more appliances in 2023.
 
Malywr said:
That is the panel i found 3 ct not used they will be 3 ph spot for 3 ph breaker
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Can you safely get a picture with the dead front removed, so we can seeing the bussing?
But if you are confident in the 245V L-L voltage measurements, in post #11, you have a center tapped delta producing a nomjnal240/120V 3p4w. The B phase to Neutral would be the confirming data, especially if it is about 216V.
 
jim dungar said:
Can you safely get a picture with the dead front removed, so we can seeing the bussing?
But if you are confident in the 245V L-L voltage measurements, in post #11, you have a center tapped delta producing a nomjnal240/120V 3p4w. The B phase to Neutral would be the confirming data, especially if it is about 216V.
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I see two dozen single pole breakers which unless this thing is completely miswired without the proper multi-pole breaker it cannot a high leg Delta. I see no 3-pole circuit breakers so maybe it's just single phase.
 
infinity said:
I see two dozen single pole breakers which unless this thing is completely miswired without the proper multi-pole breaker it cannot a high leg Delta. I see no 3-pole circuit breakers so maybe it's just single phase.
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I was thinking the same thing. Its either 208Y/120 or single phase 120/240.

OP. What does the label say on the dead front? It will be marked 1 phase-3W or 3 phase-4W. Even if it says 3 phase someone could have replaced the dead front with one from a 3 phase panel.

Maybe hold your camera up high looking down at the main lugs. I don't see a blue feeder but also don't see the black. The picture is not very clear so could just be buried in the back.
 
infinity said:
I see two dozen single pole breakers which unless this thing is completely miswired without the proper multi-pole breaker it cannot a high leg Delta. I see no 3-pole circuit breakers so maybe it's just single phase.
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As others have mentioned, these panels can be specially bussed. The breaker connection fingers do not need to always be configured ABC top to bottom. I have ordered more than one panel with the top 12 spaces configured 3 pole and the next 40 confined as 1 and 2 pole. I have seen contractors move the connections in an amazing amount of custom configurations.
 
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