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A circuit breaker is designed to "trip" when more than its rated current passes through the breaker. The current is caused by the 120V across a load of a certain resistance. The wire conducting the current must be sized to the current. For 15 amps you need 14 gauge wire. The breaker will be labeled and will have a current and voltage rating printed on the breaker.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoWe know that V=IR.
This can be re-arranged for R by dividing by I. This leaves R=V/I.
Plug in the values V=120 & I=15:
R=120/15=8 ohms
Wiki User
∙ 15y agoR=E/I. R = 120volts / 15 amps = 8. A load of 8 ohms or less will trip a 15 amp breaker.
Wiki User
∙ 14y agoThe resistance of a 120 volt circuit producing 15 amperes is 8 ohms.
Ohm's law: voltage = amperes * ohms
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∙ 14y agotoo many volts
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Do you need a special plug for a 120 volt 20 amp circuit?
No.
What wire size needed for 120 volt 3000 watt load?
AWG # 10 wire on 30 amp circuit.
How many outlets can run off 1 gfi outlet?
Eight on a 15 amp circuit, tweleve on a 20 amp circuit, including the gfci receptacle itself.
How many watts can a 20 amp breaker handle per hour?
2.3 kw per hour on a 110-120 volt circuit.
If a 120 volt current is protected by a 25 amp circuit breaker What is the largest number of watts an appliance can safely use?
if its a single current its 120v X 25 amp = 3000 watts
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
Do you need a special plug for a 120 volt 20 amp circuit?
No.
Can you plug a 2400 watt in a 15 amps?
No. A 120 volt 15 amp service will handle a maximum of 1,800 watts. Even a 20 amp service will only handle 2400 watts and that is at max load which you should never load on a 20 amp circuit. You will need a 30 amp 120 volt or 240 volt service for 2400 watts.
Is One volt is the pressure required to force one amp of current through a circuit that has 1 Ohm of resistance?
yes
What wire size needed for 120 volt 3000 watt load?
AWG # 10 wire on 30 amp circuit.
Will a 120 volt circuit carrying a 2200 watt load blow a 15 amp fuse?
It will draw over 18 amps and will blow a 15 amp fuse.
How much current flows through a toaster with a resistance of 14 ohms when it is connected to a 120 volt outlet?
I = E / R = 120 / 14 = 8.571 Amp. (rounded)
How many outlets can run off 1 gfi outlet?
Eight on a 15 amp circuit, tweleve on a 20 amp circuit, including the gfci receptacle itself.
How many watts can a 20 amp breaker handle per hour?
2.3 kw per hour on a 110-120 volt circuit.
Can you plug a 120 Volt 30 Amp tanning bed into a 125 Volt 30 Amp outlet?
yes
If a 120 volt current is protected by a 25 amp circuit breaker What is the largest number of watts an appliance can safely use?
if its a single current its 120v X 25 amp = 3000 watts
How many amperes flow in a 60 watt bulb rated for 120 volts when connected to a 120 volt circuit?
The current is half an amp because amps times volts equals watts.
