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The total load in watts would be W = A x V. 20 x 120 = 2400 watts. Any wattage higher than this will trip the breaker and shut the circuit off.
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The theoretical resistive load is V/I = 120/20 = 6 Ohms. The lower the resistance the higher the current. Usually you don't want to operate above the 80% point so the number would be 120/16 = 7.5 Ohms.
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∙ 14y ago
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∙ 14y agoUsually you de-rate the amperage by 20% of capacity hence let's assume 16A max. Assuming 120 V as the voltage and using Ohm's Law (V = Current x Resistance) you have 120 / 16 = R. Therefor the resistive load = 7.5 Ohms. If you were looking for a light bulb equivalent and were using 60 Watt bulbs at 16 A you could light 32 bulbs, each drawing 1/2 A.
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∙ 12y agoFor continuous duty you want to derate the current to 80% of max or 12 Amps in this case. Using Ohm's Law where Volts = Amps x Resistance the resistance would be 10 ohms. For a resistive load that would equate to 1,440 watts.
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∙ 13y agoThe formula you are looking for is W = A x V.
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∙ 11y agoA 20 amp circuit will handle any loads up to 20 amps. Any loads above 20 amps will trip the circuit protection and open the circuit. A 20 amp circuit requires a #12 copper conductor.
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∙ 12y ago80% of 20 Amps or 16 Amps.
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In a 240 volt single phase circuit A phase is 4000 watts B phase is 7000 watts what is the neutral load?
Question is incorrect. in a 240 Volt single phase circuit, how can you have A phase and B phase?
Can you use a 6 volt relay to 230 volt circuit?
If you are talking about a 6 volt coil, yes, so long as the contacts are rated for the 230 volt circuit. If you are talking about 6 volt contacts, no, absolutely not.
What voltage is applied to a 4 ohm resistor of the current is 1.5 amps?
It all depends on the load. The formula for calculating amps, volts or ohms (resistance of load) is E=IR, where E is the voltage, I is the current and R is the load or circuit resistance. So, if you know the resistance in ohms and the current in amps, you multiply them together to get the voltage of the circuit. Again, it depends on the load, so a 12 volt car battery can deliver 1.5 amps if the load is 8 ohms whereas a 120 volt circuit will deliver 1.5 amps if the load is 80 ohms. This is all simplified and is based on a resistive load. If the load is capacitive or inductive, then phase angles come into play and the math is more complicated using imaginary numbers and J-operators.
A digital circuit can be corrupted by electrical noise having a value of?
1 volt
A student sets up a series circuit with four 1.5 volt batteries a 5-ohm resistor and two 1ohm resistors what is the total resistance in her circuit?
7 ohms (5+1+1)
How long does current remain in a 220 volt circuit?
The current will remain in a 220 volt circuit as long as the circuit load remains in the circuit and the circuit remains closed.
What does Volt-Amp mean?
A 'volt ampere' (not 'volt amp'!) is the unit for theapparent power of a load in an a.c. circuit. It is simply the product of the supply voltage and the load current.
How many amps in 6kW on a 240 volt supply?
A 6kw load on a 240volt circuit is 25amps.
Placing a voltmeter into a circuit will raise the circuit resistance?
Usually a volt meter is placed across a component to measure the voltage drop across that component. Doing this places the volt meter resistance in parallel with that component's resistance, which will always lower the total resistance. Since the volt meter resistance is usually very large relative to the resistance of the element being measured, the total resistance does not change significantly. The formula for total resistance of two parallel elements is: Rtot = (R1*R2)/(R1+R2), as R1 (the volt meter) >> R2, Rtot ~= (R1*R2) / (R1) = R2 If a volt meter is placed into a circuit instead of around an element of that circuit, it will raise the resistance of the circuit, load the circuit with, and interrupt "normal" operation of the circuit (normal operation = how things would be without the meter in place). More importantly, the volt meter would then be measuring the voltage developped across itself (instead of an element of the circuit), which is not the point of this tool / this would be a misapplication of a volt meter.
In a 240 volt single phase circuit A phase is 4000 watts B phase is 7000 watts what is the neutral load?
Question is incorrect. in a 240 Volt single phase circuit, how can you have A phase and B phase?
How do you connect a volt to a circuit?
A volt can not be connected to a circuit.
What wire size needed for 120 volt 3000 watt load?
AWG # 10 wire on 30 amp circuit.
What is the difference between amps and volt-amps?
Amps is a measure of current flowing in a circuit. Volt-Amps or (VA) is a measure of power and is equivalent to wattage for a pure resistive load.
What are the properties of a circuit?
When you mean simple circuit, I assume a source of one volt across a load of one ohm, which, according to Ohm's Law, equals one amp.
What is the total resistance of a parallel circuit with branch voltages of 440 volt and 440 volt and branch currents of 4 amp and 16 amp?
resistance = volt / current . 440 volt across a parallel circuit means the same 440 volt across both resistance s. hence resistance r = volt / current . 440 / 20 amp = 27.5 ohms total resistance
If R1 equals 2 and R2 equals 4 in a 12 volt series circuit what is the total circuit resistance?
Series circuit? Add 'em!
How is the total load in volt-amperes for lighting purpose determined?
LxW of building x 3 volt amps per sq. foot
