yes, a building I work in had new stoves delivered, the vendor delivered 240v stoves, the tenants complained they didn't heat right. all the burners got changed I think
Electric Heater
- Thread starter shersh
- Start date
yes, a building I work in had new stoves delivered, the vendor delivered 240v stoves, the tenants complained they didn't heat right. all the burners got changed I think
Kevin Essiambre
Well-known member
Yeah, this seems to be common with new people in the building management or somewhere along that chain.
First thing my dad taught me (he's an electrician by trade. That's how I got into it) is that when you order a stove (or anything else, like baseboard heaters) for a high rise, check the voltage and order the appropriate item... such as a 208 volt stove or baseboard heater.
Sent from my new phone. Autocorrect may have changed stuff.
and some 3 phase panels have three phase power with only two pole breakers!
TRWham
Well-known member
And some only have single pole circuit breakers. I've seen plenty of 3 phase panels with only 120 V loads.
I was referring to full 3 phase with only 2 pole breakers, not single phase.
Kevin Essiambre
Well-known member
A three phase panel is not single phase just because there are only single pole breakers in it...
Sent from my new phone. Autocorrect may have changed stuff.
alfredeneuman
Well-known member
AKA Corner Grounded Delta
TRWham
Well-known member
2 pole is single phase, but that's how we started down this rabbit hole.
LS6 Tommy
Well-known member
There is no arguing it. A circuit that uses two legs of a three phase service is a single phase circuit. You only have the potential of one phase, not three. That is why when you lose one leg of a three phase service it's called "single phasing".
The OP needs to get the right unit. Nothing designed for 208 will run correctly or safely on residential 230. The blower motor will burn out, even if the heating elements do not.
Tommy
Terry D
Well-known member
Its 240 not 230 and yes I understand that. I know the difference between single and three phase. I know you can't run it on 240 volts.That's why I suggested a buck boost transformer. So I said something wrong. Let it go
Sent from my SM-G960U using The Garage Journal mobile app
LS6 Tommy
Well-known member
I'm not trying to compete with or insult you, just trying to give the OP the correct info.Sorry for the 230 typo.
A B/B Xformer won't help. He would need a step down Xformer.
Tommy
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TRWham
Well-known member
Sorry for the 230 typo.
A B/B Xformer won't help. He would need a step down Xformer.
Tommy
Bucking is stepping down. You can use a buck-boost XFRMR in either direction if it's sized correctly.
alfredeneuman
Well-known member
Originally Posted by u3b3rg33k
I was referring to full 3 phase with only 2 pole breakers, not single phase.
3 phase using only 2 pole breakers.
Read this document from Schneider (Go to "Standards")
https://www.se.com/ww/resources/sit...83/en_US/Corner-Grounded Delta 2700DB0202.pdf
I was referring to full 3 phase with only 2 pole breakers, not single phase.
3 phase using only 2 pole breakers.
Read this document from Schneider (Go to "Standards")
https://www.se.com/ww/resources/sit...83/en_US/Corner-Grounded Delta 2700DB0202.pdf
LS6 Tommy
Well-known member
Terry D
Well-known member
Sorry for taking it the wrong way. I realize I said it wrong when I said 2 hots from a 12/208 wye was still 3 phase, what I meant is that it is still derived from a 3 phase system. I understand now when it is just 2 hots, it is considered single phase
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wyliesdiesels
Well-known member
Corner grounded delta 240v or 480v is very rare these days. Unless you work in an oil field or at critical manufacturing facilities where a fault to a leg and a resultant tripped breaker would cause thousands of dollars in wasted product.
Ive only seen corner grounded delta in 1 place out here. One for a service on an old building that has been repurposed into a habitat store (the corner grounded service isnt in use by the client but still live).
Another rare animal is ungrounded deta which i have seen at a local winery. They manage their own high voltage substation. They get primary service from the Poco then distribute secondary voltages with their own transformers. On the tank platforms, they have large HV to 480 transformers with ground fault indicator lights wired in wye to ground. If one leg went to ground, one light would go out and the other 2 would get brighter.
But i digress....
Ive only seen corner grounded delta in 1 place out here. One for a service on an old building that has been repurposed into a habitat store (the corner grounded service isnt in use by the client but still live).
Another rare animal is ungrounded deta which i have seen at a local winery. They manage their own high voltage substation. They get primary service from the Poco then distribute secondary voltages with their own transformers. On the tank platforms, they have large HV to 480 transformers with ground fault indicator lights wired in wye to ground. If one leg went to ground, one light would go out and the other 2 would get brighter.
But i digress....
Stuart in MN
Well-known member
No topic is too small on this board that it can't be beat to death...
TRWham
Well-known member
Yes, if you tie the 3rd terminal of the load to the grounded corner, but I was seeing the discussion as 2 versus 3 wires.
Sevenhills1952
Well-known member
The manual is available on the Marley site.
It explains how to change jumper connections for single or 3 phase...208 or 240V.
You could download the manual and read that section...if you want to...
HUHAA SERIES - UNIT HEATER | Marley Engineered Products
https://www.marleymep.com/products/berko/huhaa-series-unit-heater
Sent from my SM-S320VL using Tapatalk
It explains how to change jumper connections for single or 3 phase...208 or 240V.
You could download the manual and read that section...if you want to...
HUHAA SERIES - UNIT HEATER | Marley Engineered Products
https://www.marleymep.com/products/berko/huhaa-series-unit-heater
Sent from my SM-S320VL using Tapatalk
TRWham
Well-known member
...
Sorry for taking it the wrong way
I choose to take the spirit of most "corrections" is towards accuracy, but any of us might seem a little haughty from time to time.
Terry D
Well-known member
St Louis is loaded with it. The utility company doesn't want to install any more new delta services, but the will if have to. A lot of older buildings here will have a delta system for there 3 phase loads and 120/240 for their single phase loads. The last one I installed was a 600 amp 240 delta service about 6 years ago. At one time these delta services had no reference to ground, that's why when there was was a fault like you said, just a indicator light would come on, then they could schedule a shut down to repair it. The brewery did it that way. About 25 or so years ago, after they realized it was not safe, they grounded the B phase on the systems. I remember taking the center fuses out of 3 phase disconnects and installing slugs. just to note, breakers with a 120/240 volt rating cannot be used on 240 delta systems, only breakers that are rated for just 240 volts can be used.
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wyliesdiesels
Well-known member
Incorrect for OPs heater which is listed as 208v only.
They make some heaters that are rated 208/240v.
OPs heater is clearly NOT listed for both voltages.