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# Can 20-amp circuits use number 12 and number 10 Romex wire?

# Can two 12-3 Romex cables be used to wire an electrical range which normally use a 8-3 Romex?

for USA, Canada and countries running a 60 Hz supply service.No, the electrical code stipulates that conductor sizes #3 and smaller can not be paralleled. Conductor size…s #2 and larger can be paralled. You can, if you want to burn the house down 30 minutes after the range kicks on. 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.

# How many 110 watt fluorescent light fixtures can be on a 20 amp number 12 circuit?

Answer Ohm's law states: I*E=P in other words: I = amps, P=watts, E=volts If: I or Amps=20 and E or Volts=120 (i am guessing as this one is st…andard for a residance) Then: 20 * 120 = 2400 or 2400 watts of power are avaliable 2400 watts / 110 watt bulbs = 21.8 bulbs can in theory, be placed on a 20 amp 120 volt circuit. The reality is that you would probably not want to place more than 17 or 18 100w bulbs on a circuit for safety and code required design load calculations. However you can bet that all bulbs in a residance will not be active at one time and therefore seldom will the peak load be at max. None of this takes into account any other loads on the circuit or derating factors such as heat, etc. When in doubt always get a qualified electrician to help or guide you as electrical fires are the cause of much property loss and life safety concern. SAFETY FIRST AND ALWAYS! Hope this helps! Terry

# What is the Number of US Circuit Courts?

there are 13 circuit courts. 1 through 12 serves various regions of the United States, while a 13th serves the District of Columbia and also as the Federal Circuit

# Can you wire a 220 volt appliance on a 220 volt circuit using 110 romex?

First understand rolmex is not rated by voltage, there is no 110 V only rolmex. You might be referring to rolmex that has only two conductors (black & white) and a bare …ground wire. Most 220 V "appliances" require two hot wires, a neutral and a ground. Check the hook up on your appliance. If it does require a neutral, then you need three conductor with ground wire. The important thing here is that you use the right size or gauge wire. The wire must be able to carry the appliances required amperage. Again, check the wiring hook up on your appliance and then check the amperage required. Then go to the hardware store, etc. and buy the correct size (gauge), and number of conductors in the wire. Tell the clerk in the electrical dept. exactly what your supplying power to and they'll likely get you the right wire.

# A galvanometer of resistance 50 ohms is shunted with a wire of 10 ohmsCalculate the current through the galvanometer when the current in the circuit is 12 amps?

If this is a homework related question, you really should consider trying to solve it yourself before looking at this answer. Otherwise, the value of the lesson, and the reinf…orcement provided by the assignment, will be lost to you. To calculate the current flow in one element of a parallel circuit, knowing the resistance of each element, consider the net resistance first. Two resistors in parallel, R1 and R2, have a net resistance of R1R2/(R1+R2). For 50 ohms and 10 ohms, this is 8.333 ohms. Now, consider the voltage across the resistors. By Ohm's law, voltage is current times resistance. For 12 amps and 8.333 ohms, you get 100 volts. Now, consider the current through one resistor, By Ohm's law, current is voltage divided by resistance. For 100 volts and 50 ohms, you get 2 amps. All of that said, now to the easier method... Resistors in parallel form a current divider, just like resistors in series form a voltage divider. You have two resistors, 10 ohms and 50 ohms, with 12 amps going through them. The current through the 50 ohm resistor is the ratio of the other resistor divided by the sum of the two resistors. This is 12 amps times 10 / (10 + 50), or 12 amps times 1 / 6, or 2 amps.

# What is the LCM of the numbers 12 and 10?

The LCM is: 60

# Can 30 amp breaker be put in number 12 wire?

No, the National Electrical Code book (US) limits the current on a #12 AWG to 20 amps.

# Is it a good idea to run two 20 amp circuits on their own 20 amp breakers but using only one 12 3 w gnd romex cable Only one white wire would be available for two different circuits?

Answer for USA, Canada and countries running a 60 Hz supply service. This is very common in commercial and industrial installations. You must be sure that your two breakers a…re fed from different phases or legs of your electrical service. Having both circuits fed from the same phase or leg might cause the neutral to melt and cause a fire without tripping any breakers. 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.

# Can a 240 volt circuit using number-12 wire handle a 4500 watt appliance?

No, the 20 amp (AWG #12) wire will be too small, you need to use AWG #10 wire. Even though 4500 watts is less that the 20 amp it can only be loaded to 80% by NEC rules whi…ch is 18.75 amps. The #12 wire would be overloaded so defiantly use AWG #10.

# Is number 10 wire good for a 20 amp circuit that is 250 feet?

Assuming you are working with 120v, you need #4 AWG copper conductors.

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# Can a double pole 20 amp breaker be used with 12-2 wire for a single 220 circuit?

The term "double pole" usually means a breaker with 2 handles that attaches in the space as a normal single pole breaker. If this is what you mean, no, you cannot. There is no… potential, or voltage, between the wire terminals. If by "double pole" you mean what is usually called a 2-pole breaker, which is a breaker with 2 handles that attaches in the space of 2 single pole breakers, then yes, you can use this breaker and 12/2 wire to produce a 220v circuit.

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# Can you use 2 runs of 12 gauge wire in for 40 amps circuit?

You might think this is a good idea, but it isn't. The code requires a single cable of the required current carrying capacity. What would happen if one of the cables was damag…ed and the hot wire severed. Then the other would be carrying 40 amps and you wouldn't know it until your house burned to the ground. No, the electrical code states that no conductors of similar conductivity in sizes smaller that #1/0 copper shall be permitted in parallel.

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# Can you use 12-2 wire with 15 amp circuit?

Yes.

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In Science

# What number will go into 10 and 12?

How about 1 or 2