0
Since this is basically a pure resistance load, the DC formula for power will be awfully darn close.
That formula says that current times voltage equals watts. Therefore 230 V times unknown amps equals 8000 watts. Or, 8000 divided by 230 equals amps. 8000/230= 34.78 amps, or 35 Amps.
This formula doesn't work if there is a reactive load ( a load that involves either coils or capacitors). A heating element involves neither, it is pure resistance.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
When a single phase supply connect to a electric heater short circuit not there why?
The electric heater is basically a resistor, designed to have the right resistance to draw the required current. So a 2 kW heater designed for a 230 v supply is really a resistor of 28.8 ohms, so when it's connected the current is 8 amps and the power is 2 kW.
You have two devices that are rated at 230 VAC single ph and your supply voltage is 480 VAC 3 ph you need a 480 VAC 3 phase to 230 VAC three phase xfrmer how do you calculate the xfrmer size?
The transformer size is calculated by using the load current that is required on the secondary side of the transformer. This secondary current is multiplied by the secondary voltage times 1.73. This total is then divided by 1000 to give you KVA. KVA = I x E x 1.73/1000.
Why is 230 volts classed as single phase?
In Europe and other places the standard single-phase supply for houses and small businesses is 230 v which is derived from a 400 v 3-phase 4-wire supply by connecting each customer's circuit between one phase line and the neutral wire.
Will a 208 volt 3 phase generator supply operate a 230 volt 3 phase motor?
Yes, but the motor's horsepower rating will not be reached.
Why does a 230volt motor have a 110 volt capacitor?
Because the capacitor only needs to "excite" one of the two phases of the 230 volt supply in order to start the motor.
What is a tosters power used or current drawn?
Depends on the model, usually there is a information plate on the device showing power consumption in watts, The theoretical current flow can be estimated from : I (current - amps) = Power (watts) / Voltage (volts). > So if you have a 1000 watt toaster @ 230 volts supply, the current in amps = 1000 / 230 = 4.35 amps.
How you get 5.6 volts 12 ma from 230 volts supply in current transfomer?
You would not connect a current transformer to a 230 v supply. To get 5.6 v 12 mA you could get a 230 to 6 volt transformer, then drop the supply from 6 to 5.6 using a 33-ohm resistor.
An electric lamp is rated at 60W the current it draws from a 230 V supply is?
P=VI so I=P/V I= 60/230 I=0.261 A
Why the electrical power in house is measured in volts like 230 volts but not like 230 amperes?
Because 230-V supply voltage is fixed, whereas the current depends on the connected load and can vary tremendously.
Smps fan mean?
Switch mode power supply (smps) converts 110-230 volts of alternating current to direct current that computer components need. The fan keeps the power supply cool.
How many amount of current flow in spark use 230 volt single phase supply?
It is limited by the size of the fuse in the circuit.
What is the voltage supply to home?
230 volts
Is there an energy efficient way to convert 230 V to 12 V DC?
It depends on the output current. In general, the switching power supply is most efficient.
How many watts in computer's 230 volts?
It depends on the current being drawn by the computer's components. The voltage will remain constant at 230V and should have a maximum amperage rating labeled on the power supply. Multiply the volts times the max amp rating to find out the max wattage that the power supply can handle. The watts actually being used is probably lower than the rated max (and should be).
How much energy in joules will a 230 nutritional calories supply?
230 calories = 962.32 joules
Can an appliance of 230 V 10 A inert fuse be used in Australian domestic homes with 240 v power supply?
Yes, 240 volts is a "nominal" figure, related to peak current. The actual usable voltage is in the 220 -230 range and any 220-230 volt appliance will be quite happy.
What is the amperage of the European electrical power systems versus that of North America?
In Europe, 230 V is the normal domestic supply whereas in the US it is 120 V. For an appliance of a certain power rating, the current taken will be inversely related to the voltage, by Ohm's Law, ie power = volts x amps. So the current at 230 V will be in the ratio 120/230 of that taken at 120 V
