what will I need to change my 3 phase service from 200A to 400A?
459399
You must understand power in = power out.\nSo the P(in) = 200A * 240V = 48000Watts \nTherefore, to obtain 400A out put you will sacrifice the voltage which will = 48000/400 = 120V\nYou need a heavy duty Transformer which will handle the 400A. The wiring size is 500MCM wire. Which is usually bus bar in a cabinet.\n\nTypically 240V 3phase line to line on a delta-wye Xfmr can provide 208V line-line provides 120V line-neutral. (208/sqrt3)\n \nUnless you have a Xfmr to convert, another way would be to use an active inverter, IGBT controlled.
1063180
first...identify the power source (AC or DC)\nthen...isolate the power source (lockout)\nnext...verify the circuit is not live (test)\n\nfinally...if it is AC three phase reverse any two of the three motor leads, if it is DC just reverse the two leads (if shouldn't be DC)\n\nif it is a european piece of equipment the wires should be black-black-brown, swap the blacks\n\notherwise, it should be brown-orange-yellow or black-red-white\n\nDO NOT ATTEMPT IF YOU ARE NOT QUALIFIED\n\ngood luck
803913
A 3-phase system requires 3 power leads A transformer or load connected delta (A to B, B to C, C to A) has no provision for a neutral connection, so there is no point in running a 4th wire. (note: a ground wire IS required by code)..a Wye, or Y connection (A to N, B to N, C to N)\nhas provision for a neutral wire.\n\nThere are 4 possible 3-phase connections,  Δ - Δ, Δ - Y, Y - Δ, and Y - Y.  Only the Y - Y connection can support a neutral, and thus 3-phase-4-wire wiring. In this system, the neutral wire carries the current resulting from unequal balancing of the phase loads.
158725
PS--just to add a bit of info, a commercial radio or TV system will be running on 480 VAC three phase or higher (577 for example).  When you talk about three phase power, the current is divided amongst three wires, so 100 KW is not such a big deal anymore.  The older AM stations will all be running anode voltages of a couple of KV or more, so the power supply has no problem having high voltage on the input.\n\nTo supply a 100,000 Watts, a 480V AC system will send about 69 1/2 Amps per phase into the load.  A 480V 3phase system rated at 200 Amps/phase can supply 288,000 Watts continuously (which for you motor heads converts to 386 1/2 electrical Horsepower).
525922
Before you can answer this you need at lease to variables. You have the voltage of 1.5 vdc. You will need Amp the clock pulls. Wattage = Volts X Amps.
679718
The deciding factor here would be the Utility Company Service Entrance. THAT cannot be rewired by you! The other two points ( Low side of transformer and Motor Windings) can easily be configured either way by simply rewiring the 3 windings on the motor, and the 3 windings on the output of the transformer.\n\nOptimum efficiency will be DELTA-DELTA-DELTA or STAR-STAR-STAR...Either way no 'ground loops' to cause loss.
229900
Electicity in a commercial application is 3 phase, residential electricity is single phase
76434
Go to your local electrician's shop
534193
You should have some HT/LT experience... And then contact with the local liasining authority...
144211
i have only seen 120v motors in these ovens to be sure look @ the motor id plate. if this oven uses electric heat instead of gas the elements will be wired for 3 phase power and could possibly be converted check the wiring digram or intsallation guide
932159
Check with a local A/C repairman and ask about a product named:  "Freeze 12"  It should be a readily available replacement for the R-12.    Conversion to R-134 is preferred, however is rather expensive due to mechanical changes that must be made to system.
27524
400 Watt should do fine.  If you have more then 2 hard drives, go to 450 Watt.
61904
Is there any specific reason you want to change the power supply?  Not enough connectors?  Is it failing?  Power supply upgrades usually are only done when a unit fails or if you are adding more hardware into the system than the PS can handle... If neither is the case, you may end up spending alot of cash on a good aftermarket supply and it will do absolutely nothing to make your machine run better.  \n\nPower supplies simply convert AC voltage to the required DC supply lines needed for the machine.  They do not do anything to improve the performance.
396504
EIA 568B and A can both go to the same switch yeah.  Just make sure both ends of the cable are using the same standard.  If you get a link light your're good to go.
847868
Are you talking about Distribution transformers ? Then that 3-phase transf. becomes free floating, which means the 'nutral' line receives ALL the phases WITHOUT nutralising them to the Earth reference potential (Standard 0 volts) and hence all the SINGLE PHASE equipment connected to power will experience the 3-phase voltage (up to 440 volts) rather than single phase (about 230 volts). You know what it will do. In case of single phase transformers, and looking at most common load-connection configurations, not much will happen. But you may find more interference on the electronic equipment connected to it.
888989
230v is measured between phase and neutral therefore L1 (R) N, L2 (Y) N and L3 (B) N.\n\nNote a star connection is Y. In your house you use 230v-240v single phase, i.e phase and neutral. Phase to phase 240√3 = 415v.
1113471
There has to be a power switch. Otherwise use your fusebox.