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Q: Why is the typical line voltage for a gas furnace 120 volts?
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What is the typical line voltage for gas furnaces?

For the internal fan operation, 110v AC is the standard. For thermostat control, usually low voltage, like 12 or 14 v DC.


Can you use 240 volts to 220 volts?

Each voltage has a range and devices rated in that range will all work . The 110 to 120 volts is one range of voltages. The 220 to 240 is another range of voltages. The reason there is a range of voltages is to help the utility company out. They are mandated to keep the voltages within a + or - 5% range of a set voltage. Because there are loads coming on line and loads dropping off line the voltage fluctuates. Using a base voltage of 115 and 230 volts means that the voltage can rise by 115 +5% = 121 volts and drop by 115 - 5% = 109 volts. In the 230 volt range the voltage can rise by 230 + 5% = 241 and drop by 230 - 5% = 219 volts. As you see they are still in the usable voltage ranges.


What is the normal voltage of house electricity in the US?

The voltage in North America can be as low as 110 and as high as 125 volts. The average is about 115 to 117 volts. <><><>><> House voltage in the US is generally 120v line to neutral and 240v line to line. It is referred to as a "120/240v single phase service." Actual voltage can be as low as 110/220 or as high as 125/250.


How do 480 volt control circuits work?

Some control circuits remain at line voltage but most use a reduced voltage of 120 volts. This is acquired by the use of a control transformer 480 primary to 120 volts secondary.


How many volts does a over head light use?

The domestic main line voltage varies from country to country.

Related questions

What is the voltage to ground of 13800 volts line to line?

On a three phase system with a line to line voltage of 13800, a wye connection will give you a voltage of, 13800/1.73 = 7977 volts to ground.


What is the voltage of a telephone line?

48 VOLTS


What is voltage between earth and line?

In a typical residential situation there is 220 to 240 volts between the two hot wires that are typically red and black and 110 to 120 volts between neutral and either black or red. The voltage between neutral and earth should be zero.


What is the typical line voltage for gas furnaces?

For the internal fan operation, 110v AC is the standard. For thermostat control, usually low voltage, like 12 or 14 v DC.


Why does ac line voltage read 185 volts?

I checked with my other meter and get 120 volts!


Why 380 volts line to line if connect line to neutral is 220 volts?

A voltage of 380 volts is a three phase voltage. On a three phase four wire system, each phase leg to neutral (grounded) will give you 220 volts. This voltage is obtained by dividing the phase voltage by 1.73, as the phase legs are generated 120 degrees from each other. Square root of three is 1.73 divided into 380 equals 220 volts.


Why does 220 volt line put out 250 volts?

A 220 volt line may put out 250 volts because this specification features voltage that varies between 220 and 250 volts. In other countries, the electricity varies in voltage between 110-120 volts.


What is HT transmission line voltage in Punjab?

approx. 1000 volts


Can 24volts be line voltage?

No. Line voltage is 120v or some multiple there of. It is the potential that comes in from the grid and is found on the hot conductor in your house wiring. 24 volts is "low voltage" and tends to be used only for switching and lighting. Also, 24 volts is often DC (though not always) while line voltage is invariably AC


What is the difference between line voltage and low voltage?

Answer for USA, Canada and countries running a 60 Hertz supply service.Line voltage is a term that is used to describe the voltage that is used to operate a specific device. A service that comes into a building would be considered line voltage. For a Class 1 circuit the top voltage for low voltage installations is 30 volts at 1000 vA. For a Class 2 circuit the top voltage for low voltage installations is not under 30 volts and not over 60 volts at 100 vA. Voltages used above 750 volts are considered high voltage installations.


How do you calculate 440v phase?

Let's get the terminology correct. A 'phase voltage' is measured across a phase, whereas a line voltage is measured between two lines. So there is no such thing as a 'phase to phase' voltage -it's a line to line voltage (hence the term 'line voltage').


What is the voltage that supplies a motor starter called?

In the electrical trade it is called control voltage. This voltage can be any voltage. In North America the common control voltage is 120 volts.