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Why are there two switches on the breakers each marked with an amperage if there are only two wires connected?
Wiki User
∙ 19y ago
Those should both be hot (black) wires to two separate circuits. Electricity flows into the breaker from the bar that they snap onto and the grounds (white and bare) all go to one grounding bar on the side of the box. If you don't know what you're doing inside the box, please put the cover back on and call someone who does know.
Wiki User
∙ 19y ago
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How do you determine which side of a breaker is line or load?
The breaker should be legibly marked, or the line side will clip onto the bus bar, and the load side should have a termination screw of some kind for you to attach a wire to it. Some bolt in breakers are not marked, the type you may use in a custom control cabinet and it can be confusing. When vertical mounting, always set the breaker so gravity would open the breaker. Attach the line side to the top lugs. Horizontal mounting, just make sure it is marked for the off position, use either end for load or line.
Is the amperage of a breaker for total amps combined or on each leg?
The breaker will trip at the amperage notated on the breaker. If it's 100A...it will trip at or around 100A. It does not matter if that breaker is physically tied to another 100A breaker. To understand this, imagine that you remove the mechanical tie from the two-pole breaker. Now you just have two 100A breakers. In actuality, you always had two 100A breakers. The mechanical tie does not change that. If you then powered two, separate 120 volt devices from the two breakers, each breaker would allow 100 amperes to pass to each of the devices before tripping. So why are they tied together? That is done when the two-pole breaker is to be used to power a 240 volt circuit. In AC current, electricity flows in both directions. In a 120 volt circuit, it flows "out" toward the device via the hot (generally the black wire) and "back" via the neutral (generally the white wire). Then the cycle reverses. It does this 60 times per second (60Hz). The amperage in the hot and neutral wires are the same (in the perfect world). Only the hot wire is connected to the breaker. In a 240 volt circuit, there is no neutral wire. You are using two "legs" of 120 volts each that are 180 degrees out of phase with each other. In other words, as leg 1 is flowing "out", leg 2 is flowing "back". Because they are out of phase, the potential difference is twice the voltage of each line or 240 volts. The current flows out and back at the same 60 Hz but this time via the two hot wires (generally black and red). Each of these hot wires are connected to the two terminals of the two-pole breaker. Due to mechanical tolerances, one breaker will most likely trip before the other. Therefore, if the rated current, (100 amps), is exceeded on either breaker, that breaker will trip and the other breaker will trip via the mechanical tie. This ensures that all power to the outlet is disconnected. If you removed the tie and only one breaker tripped, there would still be 120 volts connected to the outlet. In summary, each leg of a single, double (2 phase) or triple (3 phase) breaker is capable of allowing the amount of current denoted on the breaker. The connected circuit, regardless of voltage is protected from exceeding that amperage.
Graduated cylinders are marked in unit of?
Graduated cylinders are most commonly marked in millileters.
What colour code used for 3 pin electric plug?
The earth wire, striped green and yellow, is connected to the terminal marked E; this should be the longest of the three wires so that it is the last to become detached if the cable is strained.The live wire (brown) is connected to the terminal marked L.The neutral wire (blue) is connected to the terminal marked N.
What unit does the graduated cylinder get marked in?
Graduated cylinders are marked in milliliters (mL).
Why would a Nissan pickup run but not have power to headlights inside lights brake lights and heater?
SOUNDS LIKE A RELAY.THE EASIEST WAY TO CHECK IS TO POP THE HOOD,LOCATE THE RELAYS,AND IF THERE NOT MARKED,CHECK TO MAKE SURE THERE THE SAME AMPERAGE[MARKED THE SAME ON TOP], AND JUST START SWITCHING THEM AROUND.MAKE SURE YOUR KEY IS OFF BETWEEN SWITCHES.
How to shut off power to your house?
If you have circuit breakers there is a double breaker at the top of the row of breakers marked Main. Flip that one and it shuts the house off. Older houses with fuses have a pull out fuse with two long round fuses in a holder. Pull the holder out and everything is dead. There should be two of these holders in the fuse box. One is the main and the other will be for a stove. The main will be marked Main.
Is it true that As long as a device is correctly marked it can be connected to a DOD computer?
False
Which phase of online usage is marked by collaborative content that is connected in meaningful ways?
web 3.0
Where is the starter relay on a 2000 Ford Escort?
There isn't one. The heavy positive cable goes directly to the starter. The solenoid is what transfers the heavy amperage to the starter. The wire from the ignition goes to the connector marked s.
How do you wire started in cavalier Z24 2000?
Wire a starter.....There are 3 terminals on the solenoid.... 2 Big and 1 little....2 of them are marked on the solenoid (S) and (M) the other may be marked (B)...The (B) is connected to the battery(it's a big terminal) The (S) is a small terminal that is connected to the switch(it will have a small wire)(probably purple) and the (M) terminal will be connected to the starter itself with a short braided wire....
What was one of the two armed conflicts which marked the start of the Revolutionary War?
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What battery cable is positive they are not marked?
Red wire is Positive in a car battery. If they are not color coded, find which one is not connected to the chassis and this will be positive.
How do you wire a synchorous motor?
The simplest synchronous motor has two leads which must be connected to the live and neutral of the correct supply voltage as marked on the motor.
In depth first traversal of a graph G with n vertices k edges are marked as tree edges the no of connected components in G is?
n-k-1
Why does your refrigerator keep popping the breaker?
The load current is greater that the amperage of the breaker. Add up everything that is plugged into the circuit. If the total is greater that the number marked on the handle of the breaker unplug some of the equipment.
Where is the negative battery terminal located on a 2004 Hyundai Tucson?
The negative battery terminal is marked with an minus (-) sign on the battery next to the post. It is the one with the black cable connected to it.
