Can you replace a 130 volt 40 watt bulb with a 120 volt 40 watt bulb?

Answer 1

Yes. These values are not exact, your voltage could actually be between about 220 and 240 at any given time as long as you're within that range it's okay.

Additional Answer

The figures for voltage/current/power that you see printed on lamps, or on appliance data plates, are termed nominal values, where 'nominal' means 'named'. So if a lamp has a nominal value of, say, 240 V, this doesn't mean that the lamp will necessarily be subjected to exactly 240 V when it is plugged into a supply.

Since 1st January, 1995, the UK's nominal supply voltage has been specified as 230 V -but the actual voltage is allowed to vary between -6% and +10% of this nominal figure -in other words between 216.2 V - 253.0 V. So, as you can see, it is quite normal for a lamp with a nominal voltage of 230 V to operate at an actual voltage of 240 V.

Answer 2

Yes. These values are not exact, your voltage could actually be between about 220 and 240 at any given time as long as you're within that range it's okay.

Additional Answer

The figures for voltage/current/power that you see printed on lamps, or on appliance data plates, are termed nominal values, where 'nominal' means 'named'. So if a lamp has a nominal value of, say, 240 V, this doesn't mean that the lamp will necessarily be subjected to exactly 240 V when it is plugged into a supply.

Since 1st January, 1995, the UK's nominal supply voltage has been specified as 230 V -but the actual voltage is allowed to vary between -6% and +10% of this nominal figure -in other words between 216.2 V - 253.0 V. So, as you can see, it is quite normal for a lamp with a nominal voltage of 230 V to operate at an actual voltage of 240 V.

Answer 3

Answer for USA, Canada and countries running a 60 Hz supply service.If we assume that the resistance of the light is R then the amps drawn by the 100 Volt light is 100 divided by R; and the amps for the 240 volt light is 240 divided by R. Therefore, at 240 volts the light will draw 2.4 time the current it would draw at 100 volts and will likely burn out the bulb immediately.

Correction: The answer above assumes the R of both lamps is the same. Most likely they are not.

A 100W lamp designed for and supplied with 100V draws 1A with an R of 100ohms.

A 100W lamp designed for and supplied with 240V draws 0.42A with an R of 571.43ohms.

The Rs do not change. I assume the circuit has not changed so it is a 100V circuit.

If you place the 100V across the 571.43ohms you get a current of 0.175A.

The lamp designed for 240V, when placed on a 100V circuit, would not glow and would not burn out.

Going the other way and placing 240V across the lamp designed for 100v you get a current of 2.4A. Since it is designed for only 1A it would most likely burn out.

All this is very technical and to the questioner I apologize. The answer is:

NO, YOU CANNOT REPLACE A 100V LIGHT BULB WITH A 240V LIGHT BULB.

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

Answer 4

For all intended purposes they are the same. Household voltages for lighting range from about 105 to 125 volts. The manufacturer would typically list the higher 130 volt rating because the bulb was tested up to that voltage.

Answer 5

No, the higher voltage will cause the bulb to burn out instantaneously.

Answer 6

Yes. Voltage typically ranges from 110 to 120 volts in a home.

Answer 7

Yes