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3-phase is a way to supply more power on similar wires. If your oven is designed to be run off 3-phase, then it will need that. I've not seen any residential ovens wired that way, though. What makes you think it's wired 3-phase? If you are in the US, it's likely wired for 230v, which is 3 wires, but not 3-phase.
Your question is not mate. What do you exactly want to do? If I understand that you have a single phase apparatus you wanted to connect it from a three phase box. If that is the case, then you have three options: 1. If the wires are new colour coded ones then you have to take your neutral wire from the blue wire and the live from any of the other three. 2- for old colour codes , take the neutral from the black wire and the live from any of the other three. 3- finally. Connect the neutral from the black or blue and the live from any of the other three red ones if the wires are in a conduit or trunking. I hope this answers your questions. Good luck
you must understand this : your electric oven must be indicate if it is a single phase( use 3 wires for 230 2 hot wires + 1 Neutral see the diagram like dryer? you must sure about this. Normally any appliance for home are single phase NOT 3 phase.
2) If you electric oven, say 3 PHASES( use 4 WIRES, 3 hot wires+1 Neutral wires) this for industrial application +comercial NOT for home
However if you system is 3 phase you must need to install 3phase transformer.
208 is usually referred to as a singe phase but technically it is poly phase. The industry refers to it as single phase as it is uses one line as power and the other as "Common", not neutral. If the plug has 3 prongs, It is 2 lines of power and an earth ground. If the plug has 4 prongs, It is 2 lines of power, one neutral, and one earth ground. Let me know if you need more.
It can be done with a transformer, 480/ 240 single phase transformer to get the lower voltage. Then the oven will require some wiring changes to get all the elements and controls connected to two hot wires instead of three. The transformed will be sized to the wattage rating of the oven. This is a only basic description of what needs to take place.
It could be but, the expense of replacing all the 3 phase controls would cost more than what it would be worth. Sell it and use the proceeds to purchase a single phase unit or if you are wanting to use it in a commercial building, see if you can have 3 phase installed by your electric provider.
Switching phase on products are usually up to UL. You need a good tech and it can be done. If it is marked 3 phase and you make a single, the responsibility falls on the person that did the conversion. Components should be similar from 3 phase to single, just use OEM parts!