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They don't. the voltage decreases & the amps will increase. The longer the wire the more resistance the less voltage. In order for you power, KW or VA to remain the same, if your voltage drops your amps go up, if your voltage goes up your amps will drop. (I=P/E),(P=ExI)(E=P/I)
I=amps
E=volts
P=power or watts or better yet VA
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The answer above presumes that KW or VA remains the same in a circuit regardless of what you do to it. They do not. I do not intend to be argumentative but here is my answer.
Adding resistance IN SERIES with a circuit decreases the amps that would otherwise flow because it has to overcome more resistance. Since conductors have resistance and are by their very nature IN SERIES with a load, adding length to conductors can, does, and will decrease the amps across the entire circuit.
If you aren't into reading technical descriptions, stop reading now. The simple answer is in my second paragraph above, and is all you probably needed or wanted to know.
What confuses people is how the circuit behaves when you add another load IN PARALLEL, which is how most circuits you and I use are wired. Adding a load IN PARALLEL will increase the amps of the overall circuit because it decreases the net resistance of the circuit. The best comparison that will help you understand this is a water line. If a water line has two faucets with only one faucet open, you have a certain amount of pressure inside to water pipe. If you open both faucets you now have more water flowing and a net decrease in pressure within the pipe. Comparing a circuit to a water pipe in this manner is not far fetched. It is exactly how and why you get more amps when you add lights to a circuit. They are connected IN PARALLEL to each other.
Getting back to our conductors, however, you can see that the first leg of conductors from the breaker to the first load is carrying the amps of the whole circuit. Each leg from one load to another carries decreasing amps because it is carrying amps to fewer loads. The amount of power lost in these conductors is equal to I2R. Plugging in this value to the other formulas allows you to calculate how much voltage is "dropped" across any leg of the circuit, knowing the voltage applied and getting the resistance of the conductors from the code book.
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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.
What else can I help you with?
What size circut breaker for 10-2 wire?
A #10 wire has the capacity for 30 amps. No breaker larger than 30 amps should be used to protect the circuit.
Can i wire two different size wires together?
To do so LEGALLY, the circuit breaker must not be rated at a capacity (in AMPS) greater than the SMALLEST wire.
What is the maximum amount of amperage allowed on a 10 gauge wire if it's part of a 480 VAC circuit?
10 AWG should never carry more than 30 Amps.
What ampacity should branch circuit conductors have?
Branch circuits wire sizes are governed by the connected load amperage of the circuit. The wire size ampacity then governs the size of the breaker that is used to protect the circuit from overloading. For general home wiring circuits the conductors used are, receptacles and lighting #14 - 15 amps, dedicated circuits load dependant, hot water tank and baseboard heaters #12 - 20 amps, clothes dryer #10 - 30 amps, range #8 -- 40 amps.
How many amps will taken in sq mm copper wire?
10 amps
What is the appropriate wire size for a circuit requiring 60 amps?
The appropriate wire size for a circuit requiring 60 amps is typically 6-gauge wire.
What is the appropriate wire size for a circuit that requires 30 amps of current?
The appropriate wire size for a circuit that requires 30 amps of current is typically 10-gauge wire.
What is the recommended wire size for a circuit carrying 35 amps of current?
The recommended wire size for a circuit carrying 35 amps of current is typically 8 AWG (American Wire Gauge).
What is the recommended wire size for a circuit carrying 80 amps of current?
The recommended wire size for a circuit carrying 80 amps of current is typically 4 AWG (American Wire Gauge).
Can work wire for 100 amps use for 60 amps circuit?
Using a wire rated for 100 amps for a 60-amp circuit is generally fine. It's important to ensure that the wire gauge matches the amperage requirements to prevent overheating and potential fire hazards. Check local electrical codes to confirm that it is within regulations.
Should amps coming in be same as amps going out on neutral wire?
Yes, on a 2-wire circuit you will always have the same current anywhere in the circuit unless there is another path (fault) for it to travel.
What is the maximum wire amps capacity for the electrical circuit in question?
The maximum wire amps capacity for the electrical circuit is determined by the wire gauge and the circuit's voltage and amperage requirements. It is important to consult the National Electrical Code (NEC) or a qualified electrician to ensure the wire is properly sized for the circuit to prevent overheating and potential hazards.
What wire size in a 20 amp 250 volt circuit?
For a 20 amp 250 volt circuit, you would typically use a 12-gauge wire. This wire size is rated to safely handle the current and voltage requirements of the circuit without overheating. It is important to always refer to local electrical codes and regulations to ensure compliance.
When is a 30 amp circuit required?
When the wire you are protecting is a #10, rated at 30 amps.
What size circut breaker for 10-2 wire?
A #10 wire has the capacity for 30 amps. No breaker larger than 30 amps should be used to protect the circuit.
What is the recommended wire size for a 220 volt circuit according to the 220 volt wire size chart?
The recommended wire size for a 220 volt circuit according to the 220 volt wire size chart is typically 10 gauge wire for a circuit with a maximum of 30 amps.
Where is an extra battery wire that can handle 30 amps on 2003 Jeep liberty?
No such circuit exists.
