Commercial Dishwasher

Merry Christmas
M

Malywr

Senior Member
Location
New Jersey USA
Do commercial dish Washer needs GFCI protection
DW name plate DH6000
208-250V. 3PH. 46-41A

Code seis all equipment single ph or 3 ph 150 v or less and 60A or less has to gfci protected
This DW is over 150v


Sent from my iPhone using Tapatalk
 
You sort of answered your own question- is over 150 volts so no.

Edit: OOPs, you said 208-250 volts, so if it is connected to 208/120 system then the voltage to ground is less than 150.

If it is connected to corner ground or high leg delta then you have at least one line that is over 150 to ground and the answer would be it is not required on those systems.
 
kwired said:
You sort of answered your own question- is over 150 volts so no.

Edit: OOPs, you said 208-250 volts, so if it is connected to 208/120 system then the voltage to ground is less than 150.

If it is connected to corner ground or high leg delta then you have at least one line that is over 150 to ground and the answer would be it is not required on those systems.
Click to expand...

Power to equipment is 3ph. 245v 60A breaker

Yes phase to ground is 120-125v


Sent from my iPhone using Tapatalk
 
Malywr said:
Power to equipment is 3ph. 245v 60A breaker

Yes phase to ground is 120-125v


Sent from my iPhone using Tapatalk
Click to expand...
Sounds like you have a High leg delta with one leg at 208V to ground, the other two legs would be 120V to ground.

Re read post #2, not required on a high leg delta system. Measure all three legs to ground to be sure.
 
infinity said:
So what type of a system this? Is it 3 phase, 4 wire Delta? Or is it 208Y/120?
Click to expand...

be1ceece75783af7015aa90ba86c15b1.jpg

3ph. 208-240v 3 wire no neutral


Sent from my iPhone using Tapatalk
 
jim dungar said:
Do you mean to say they do not make 60A 3pole GFCI breakers?
Click to expand...
Only up to 50A in a 3P 5mA QO model
Does Schneider Electric/Square D offer QO/QOB 3 pole breakers with GFI protection?
Product Line:
Circuit Breakers

Environment:
Applies to QO-GFI

Resolution:
Yes, we offer QO/QOB- GFI 3 pole breakers in amperages of 15, 20, 30, 40, and 50.
NOTE that this breaker does NOT have provision for a load neutral conductor and is for use on 208Y/120 VAC systems.
For 240VAC use EPD/EPE breakers. (30ma ground fault protection)
Click to expand...

But we still don't know if it's a 208Y or 240 Delta.

My guess it is a delta with a center tap neutral and a high leg and therefore don't need one to meet the rule.
 
Malywr said:
Power in building is 245V PH to PH
125V PH to Neutral or GEC
Click to expand...
You have a high-leg 240/120V 3 phase 4 wire center tapped delta system. Per the NEC and ANSI standards it is described by its nominal voltages, not its measured ones.
Two legs to neutral/ground measure the common 120V while the third leg measures 1.73X120V to ground.

Different regions often have slang names for these systems.
 
infinity said:
So it is not a 3 phase, 208Y/120 system it is a 3 phase, 4 wire Delta system. Since it is not a Wye system is GFCI protection required?
Click to expand...
Not required if it is delta system, there will always be at least one conductor with voltage to ground over 150 volts on 240 volt delta systems.

No way OP has a wye system and reading 245 phase to phase. That should give him line to neutral voltages of around 140 if it were a wye system. Lot of 120 volt rated equipment won't play so well if supplied by that.
 
MTW said:
Only up to 50A in a 3P 5mA QO model


But we still don't know if it's a 208Y or 240 Delta.

My guess it is a delta with a center tap neutral and a high leg and therefore don't need one to meet the rule.
Click to expand...

I did not measure yet but panel had a lot of dingle breakers I assume all phases to neutral are 125v


Sent from my iPhone using Tapatalk
 
Malywr said:
I did not measure yet but panel had a lot of dingle breakers I assume all phases to neutral are 125v


Sent from my iPhone using Tapatalk
Click to expand...
Load centers are not customizable but if you ordered a NQ panel you can designate bus arrangement for each breaker space if you wish. I sort of found this out the hard way when they misunderstood what I wanted when ordering one one time. I ended up with a panel with three phase bus and three phase feed through lugs - all the other spaces were set up to connect to A and C only and I wasn't able to plug/bolt on any three pole breakers (and have all three phases out of that breaker). You would have thought the fact I did have one three pole breaker on the order would have raised a flag for some further clarification but it did not. I wondered why it was taking so long to get that panel, usually when I ordered a similar panel it came from stock items and I would have to field assemble it. This one was factory assembled with the specifications my salesman entered with their panel builder software and did not fully understand what he actually submitted for an order.

So with mine all the breaker spaces was 120/240 single phase, though it would been possible to have say three phase available for so many spaces and the rest just A and C phase. stock items are straight three phase through the whole panel.
 
You must log in or register to reply here.
Top