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Different countries have different legal limits to how much their electricity supply voltages may vary. In the UK, for example, the nominal supply voltage for residential supplies is 230 V, but this is allowed to vary between -6% and +10%. So, as you can see, and 'actual' voltage of 250 V is within the allowable upper limit (253 V) for the nominal voltage of 230 V. So, to answer your question, you need to check what the allowable variation is at your location (your electricity supplier can confirm this) -I would guess that 250 V would be well within the allowance for 240 V.
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Why does a hairdryer on the 240 volt setting work in the US and does this mean the switch to change the voltage is faulty and it's not really operating on 240 volts?
Hair dryers usually have a HIGH and a LOW setting. The HIGH heating element is about 8 ohms. The LOW heating element is about 32 ohms. voltage (squared) /… resistance = power (watts) 120*120 / 8 = 1800 watts ( HIGH ) 120*120 / 32 = 450 watts ( LOW ) When the voltage switch is set to 240 volts, ALL it does is limit the HIGH/LOW switch to the LOW setting. 240*240 / 32 = 1800 watts ( LOW ) 240*240 / 8 = 7200 watts ( HIGH ) (the heating element would burn out)
Short answer: YES, it can
To get the actual household voltage range figures for your locality it is best to ask a local licensed electrician or your local electricity supply company. As long as yo…ur appliance has a rating plate, user guide - or has similar information printed on its body - which says it was designed to run on a range of voltages from 120 to 240 volts ac, you can plug it in. In the US, Canada and other countries which use a similar 60 Hz alternating current system, circuits for lighting and low-power appliances run at 120 volts plus or minus 10%, in which case the voltage range could be from 108 Volts to 132 Volts. In countries in Europe and other world areas which use 230 volts 50 Hz alternating current system, circuits for lighting and low-power appliances now run at 230 volts plus 10% or minus 6%. Thus the mains supply voltage will remain within standards even if it varies between an upper limit of 253 volts and a lower limit of 216.2 volts.
When troubleshooting a 400 watt metal halide lighting system you read 120 volts AC in the lamp socket that catalog shows300 volts is the nominal open voltage what would your next step be?
Most HID fixtures have multi taps in the primary winding. Check and make sure that you have the correct voltage applied to the right tap. Also check and make sure that the cap…acitor is in the circuit. I just worked on a job where the custodian had taken the ballast and everything out of the fixture base and just wired it across the line. I also got 120 volts at the lamp socket. When checking your voltages a digital meter can give you a phantom reading. If a connection is loose or corroded the digital meter may get enough of a reading to indicate the correct voltage and still not have enough current to do the work needed. You may need to use a solenoid ( wiggins ) meter to make sure you are not getting a phantom. Check to see if your socket wires have been shorted, grounded, or broken. If any of these have happened, the voltages will look good at all points except the socket, but the circuit may not trip because of the ballast and or the capacitor depending on the specific damage to the socket wires.
In order to give your questions a fair chance at being answered, they should really be written in English. You might be able to find a better answer for this one over on the… bizarro forums, but I'll give it a shot: The 230>pi function was, in South Africa, not 200 or, such as, 300, in the Iraq.
Yes if the bulb is an incandescent type of bulb. Further InformationThe voltage printed on a lamp is its nominal, or named, value. For example, the nominal voltage of …the UK's supply (since January 1995) is 230 V. But this does not mean that the actual voltage is necessarily 230 V, as it does vary. In fact, it is allowed to vary from -6% to +10% of its nominal value -in other words, from 216.2 - 253.0 V. So, as you can see, it would be considered quite normal for a 240-V lamp to be subjected to 250 V.
Regarding the question of "Why isn't there voltage drop in a 240 volt system?" The smart alex answer is "because no current is flowing." Only if no current is flowing can th…ere be no voltage drop in any circuit. All conductors, even supercondutors, have resistance and this resistance will produce a voltage drop when a current is flowing through the conductor(s). 240 volts is used over 120 (or 12 volts) because it reduces the current reguired for a fixed amount of POWER (watts). Therefore, the conductor size can then be reduced to reduce cost, size, weight or to improve flexibilty.
It is dangerous enough to have 120/240vac in the house. U.L. along with I.E.E.E. , G.E., Westinghouse etc. helped set these safer ways of wiring including getting everyone run…ning on 120/240. 220,480vac and up are used to run big motors in industry. Trained industrial electricians maintain them.
For lead-acid chemistry, as in a car battery, think 13.6 volts DC.
wire in the us is available in 300v or 600v ratings so 300 volt is good for 120v 240v or 277V 277V is usually only used in lighting
Why there is different types of voltage range 210 Volt 220 Volt 230 Volt 240 Volt 250 Volt in single phase AC system and what it based?
In the US the voltage is about 220 volts. This voltage is based upon the average voltage of the AC sine wave. It can peak as high as 240 volts or as low as 210 volts. So these… different voltages are actually referring to an average 220 volt system.
No. You will need a transformer to step up the voltage and you will possibly need to convert the plug.
Answer for USA, Canada and countries running a 60 Hz supply service. Yes, the voltage ratings on electrical equipment are the responsibility of the manufacturer. The manufac…turer uses the highest end of the scale so that it encompasses the the highest variation in voltage in that voltage category. Usually you will see equipment with the ratings stated at 130/250 volts. This means that any voltage up to and including the stipulated voltage rating can be used to connect to their equipment.
There is no problem making this connection.
How you can produce 240 volts from a single phase 3 wire system with a nominal voltage of 120 volts?
you can use two hot wire different phases with a double pole braker .
240 v has been found to be a useful voltage because a lower voltage requires more current and therefore thicker wires, which requires more copper sitting around. On the other… hand, too high a voltage is dangerous for the users. So a middle voltage has to be found. America uses 120 v for house supplies, usually with split phase so that two live 120 v wires can be used to supply 240 v to high-power units like air conditioners. Each live wire has a voltage of 120 v to ground. In Europe and other places the single-phase supply is 220-240 v with a live an neutral conductor to carry the current, and a separate ground wire to connect the external surfaces of all pieces of equipment to ground.
Yes, the rating on a 240 volt receptacle is 250 volts.