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#63950 - 03/27/06 08:53 PM 208 v 3 ph or 240 v 1 ph. connection
Cinner Offline
Member

Registered: 12/01/04
Posts: 77
Loc: Kelowna, B.C., Canada
A convection oven with nameplateinfo: 11kw, 208 3ph or 240 1 ph.

It has three wire leads, blk, red and white coming from the oven.

Is the 3 phase connection red to line 1, blk to line 2 and white to neutral? Can someone clarify.

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#63951 - 03/28/06 06:59 AM Re: 208 v 3 ph or 240 v 1 ph. connection
JBD Offline
Member

Registered: 07/12/01
Posts: 599
Loc: WI, USA
What does the wiring diagram show? Have you read the instructions?

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#63952 - 03/28/06 07:28 AM Re: 208 v 3 ph or 240 v 1 ph. connection
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
A white wire? How about using a meter to see what's really coming to the oven?

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#63953 - 03/28/06 10:23 AM Re: 208 v 3 ph or 240 v 1 ph. connection
gfretwell Offline


Member

Registered: 07/20/04
Posts: 9063
Loc: Estero,Fl,usa
It certainly sounds like this is single phase equipment and they are just recognizing that if you are on 2 phases of a 3 phase wye it will see 208v.
_________________________
Greg Fretwell

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#63954 - 03/28/06 01:19 PM Re: 208 v 3 ph or 240 v 1 ph. connection
FountainGuy Offline
Member

Registered: 03/15/06
Posts: 30
Loc: Lawrenceville,GA, U.S.A
That 3 for 3-phase must be a typo! For just an 11KW oven, it's probably your choice of 208V 1-Ph or 240V 1-Ph. But I wouldn't guess; if no manual or diagram is available, can you call the manufacturer of the oven for clarity?

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#63955 - 03/28/06 03:55 PM Re: 208 v 3 ph or 240 v 1 ph. connection
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Quote:
A convection oven with nameplateinfo: 11kw, 208 3ph or 240 1 ph


Any chance this is a Hobart commercial convection oven?

If so they can be configured for either supply system.

You need to look at the wiring diagram and compare it to the connections in the oven to determine if is presently wired for single or three phase.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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#63956 - 03/28/06 04:16 PM Re: 208 v 3 ph or 240 v 1 ph. connection
RobbieD Offline
Member

Registered: 02/23/03
Posts: 238
Loc: Canada
Some commercial ranges like the Garland ones say single or three phase on the talley plate. They give you all the different ways they wire their stoves depending on what you order. Basically one talley plate for every stove. You have to specify how you want it wired so it is compatible with your supply.
In your case it seems to be wired 3 wire 240 or 208V because of the neutral.

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#63957 - 03/28/06 04:22 PM Re: 208 v 3 ph or 240 v 1 ph. connection
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Quote:
In your case it seems to be wired 3 wire 240 or 208V because of the neutral.


Does he have a neutral or just a white wire in the cord?

Bob
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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#63958 - 03/28/06 06:54 PM Re: 208 v 3 ph or 240 v 1 ph. connection
RobbieD Offline
Member

Registered: 02/23/03
Posts: 238
Loc: Canada
I guess I assume too much and would normally think that he knows where the leads are going before he connects them up.

MY BAD

If it has a cord see where the wires are going. Make sure the cord has a bond. By following the white lead you determine that it is a neutral hook the white wire to the identified conductor. You would figure there would be a diagram on the stove for you.

If you are unsure about these connections find more info on the range, get in contact with a distributor, don't rely on forums for this info, you don't want to do any costly mistakes.

Rob

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#63959 - 03/29/06 09:34 AM Re: 208 v 3 ph or 240 v 1 ph. connection
Larry Fine Offline
Member

Registered: 02/18/05
Posts: 684
Loc: Richmond, VA
There's a good chance that some internal connections need to be changed for differing systems. RTFM!
_________________________
Larry Fine
Fine Electric Co.
fineelectricco.com

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