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How many 125 watt bulbs can be used on a 15amp circuit?
Assuming that your voltage is 120 volts the maximum wattage on that circuit is W = A x V = 15 x 120 = 1800 watts. Code only allows circuits to be loaded up to 80% capacity. 1800 x .8 = 1440. 1440/25 = 57 lamps. Assuming that your voltage is 240 volts the maximum wattage on that circuit is W = A x V = 15 x 240 = 3600 watts. If the question is from a 240 volt country you will have to find out what the local electrical regulations are for circuit loading.
What is a 208 circuit?
The 208 volt configuration is one phase of a three phase source at 240 volts, where the 208 volt circuit is connected between the center tap of one 240 volt phase (usually a grounded neutral, in the style of a standard 120/240 split phase system) and the high delta connection on either of the other two phases. 208 circuit would consist of two phases of a 208 volt wye system or could be all three phases. The voltage between conductors would be 208 volts. The voltage to ground from any phase would be 120 volts. A 240 volt delta system would give you a high leg to ground, somewhere around 190 volts and the other two would be 120 volts to ground.
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)
What is the function of 240 ohms resistor?
To provide 240 ohms of resistance. What those 240 ohms do in an actual circuit depends on the intention of the designer.
How much current must flow to carry 240 watts at 120 volts?
240 watts at 120 volts requires 2 amperes. Power = voltage * current
Can one leg of a 240 volt circuit be capped and the circuit breaker changed to make an existing 240 volt outlet into a 120 volt outlet?
No, you cannot simply cap one leg of a 240-volt circuit and change the breaker to convert it into a 120-volt outlet. This requires rewiring the circuit to provide 120 volts, including changing the outlet and possibly other components to be compatible with the lower voltage. It's recommended to consult with a licensed electrician to properly convert the outlet.
Do you need a 240 volt fuse in each leg of a 240 volt circuit or should you use two 120 volt fuses?
Both legs of a 240 branch circuit need to be fused with a fuse rated at 240 volts or better. The voltage potential across the load is what governs the fuse voltage ratings.
How many twos are in 240?
There are 240/2 = 120 of them
What does 240 and 120 equal?
240+120=360.
Can you use a 2 pole breaker for a 120 volt single phase circuit?
No, a 2 pole breaker is designed for a 240-volt circuit or for two separate 120-volt circuits that are out of phase with each other. For a 120-volt single-phase circuit, you would typically use a single-pole breaker.
What is the LCM of 120 and 48?
The LCM is 240.
Can you plug a 125-250 appliance into a 120-240 circuit?
all voltage is plus or minus 10% of rating
Is a branch voltage in each branch of a parallel circuit less than the applied voltage?
Yes. In a 240 volt circuit, the total applied voltage is 240 volts but each leg is carrying only 120 volts.
Does it matter what leg or phase of 110 connects to white wire in 220 circuit?
The white (or neutral) wire is not involved in a 220 circuit. Using US NEC conventions, red and black in a 120/240 split phase service form the 240 (220) circuit. The neutral (white) wire is only used when you want 120 (110) volts.
How many 125 watt bulbs can be used on a 15amp circuit?
Assuming that your voltage is 120 volts the maximum wattage on that circuit is W = A x V = 15 x 120 = 1800 watts. Code only allows circuits to be loaded up to 80% capacity. 1800 x .8 = 1440. 1440/25 = 57 lamps. Assuming that your voltage is 240 volts the maximum wattage on that circuit is W = A x V = 15 x 240 = 3600 watts. If the question is from a 240 volt country you will have to find out what the local electrical regulations are for circuit loading.
Is there a converter for 220 from 120 amps?
This question makes no sense unless you mean volts instead of amps. And no, not for residential. Your panel feeds 120 volts or 240 volts depending on the way things are hooked up. You can wire circuit that is currently connected 120 as 240, however unless it is a dedicated circuit, YOU WILL BLOW UP YOUR APPLIANCES. Consult a qualified electrician.
How do you split 240 to 120?
divide 240 by 2 and.. voila.. you get 120!
