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The same as a split single phase service, except with 3 phase panelboards, and the size of the service equipment can differ greatly. If the service voltage is 480v, you'll have to install your own Transformers to use 120v equipment. I'm not sure as to the purpose of this question. If you're trying to do it yourself, you probably shouldn't have to ask how. It's a pretty large thing to do. If you're just curious, the above answer should suffice.
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MaxineTo install a new electrical service you need to contact a licensed professional electrical contractor. that depends on where you live. but even where a licensed electrician is needed you can still do the grunt work. first determine where the service will enter the dwelling. next , after checking code determine where you will place your meter pan. it should be about 5- 5.5 feet above grade ( eyelevel) then attach mast, again make sure you meet requirements concerning height to the weatherhead.. the total feet above grade (usually 15 feet) and that you do not exceed the allowable height on the high side of the roof line ( usually 32-34 inches). then drop the three 4/0 aluminum cables down the mast and after coating the exposed ends, connect to the appropiate lugs the two hot and one ground. next drive a grounding rod at least six feet into the ground within one foot of the foundation and using an acorn nut connect to meter pan with copper cable. at ths point you would be ready for your first rough inspection
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Is there an advantage to changing to a 3 phase system if we have no 3 phase motors or ACs in our load?
None what so ever. The cost of changing all of your equipment and new service would be high. The electrical bill is based on wattage used be it single phase or three phase.
What wire size for 100 amp single phase 3 wire commercial service?
2 copper
How can you get 3 phase supply from single phase supply by using only transformers?
You cannot. By definition, the potential of each line must be displaced from each other by 120 electrical degrees, and this is only achievable from a three-phase source.
How do you get 380 volt from 220 3 phase?
Only with a 3 phase transformer.
What type of panel should be used in 3 phase 400 amp?
The type would be a three phase panelboard. If you are carrying the wye neutral into the service, then it would be a three phase four wire distribution panelboard. Regardless of the style used, it would have to have a minimum 400 amp bus.
