0
I have two 115 volt 8000 btu window air conditioners . from the power panel to AC units is about 125 ft. what gauge wire and what Amp rating circuit breakers are needed for this project. a.r.r.?
Wiki User
∙ 15y ago
Since an air conditioner is considered a dedicated load, you should run two separate circuits. A 20 amp breaker and 12 AWG wire would be legal for each AC, but the voltage drop would exceed the NEC recommended 3%. You would need to increase the wire size to 10AWG for each circuit to reduce the voltage drop to less than 3%. An 8000 btu, 120V AC should draw a little less than 8 amps, check the nameplate. The above recommendation assumes a current draw not to exceed 8A on each circuit. 3% of 120V is 3.6V. R = E/I R = 3.6/8 R = 0.45 ohms maximum. 12 AWG wire is 1.98 ohms per 1000', so a 125' run (250' of wire in the circuit) would have a resistance of 0.495 ohms. 10 AWG wire is 1.24 ohms per 1000', so a 125' run (250' of wire in the circuit) would have a resistance of 0.31 ohms.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Why are fuse's important?
A fuse(s) or circuit breaker(s) is needed in any electrical system (AC or DC). These protection devices react to the amount of heat being produced by electricity passing through wires and/or components. They are used so as to protect wires and components from the extreme heat produced should there be an electrical overload or short circuit. When a short or overload occurs, the amps being drawn spike and this increases the heat produced in the wiring and components. When this occurs, a fuse or circuit breaker reacts almost instantly to stop the flow of electricity in the circuit and thereby stopping heat production. Without PROPERLY-SIZED FUSES OR CIRCUIT BREAKERS, this quick break in the circuit would not be possible, and damage to components and even FIRE could result. If you are having a problem with fuses "blowing" or breakers "tripping," please know that these devices are doing their job! It is important that you NOT replace a fuse or breaker with a higher-rated one. Check the circuit for shorts or overloads. Bare wires touching each other, as well as having too many appliances on a circuit is dangerous and will cause fuses to blow and breakers to trip. The wiring in your home or business is sized for a specific amperage. Increasing the size of protection devices will cause your elecrical system to not be protected adequately. Branch circuits feeding lights and 120 volt recepticles should have only a 15 amp or 20 amp protection device, depending on the wire size. If you cannot locate the overload or short, keep the power to the circuit OFF and contact a qualified electrican.
What size breakers are needed for two 500 watt baseboards?
Each baseboard heater will draw a little over 4 amps at 120 volts or 2 Amps at 240 volts. The total number of baseboards on a circuit will draw the sum of these amps. Keep the load under 80% of the amperage rating of the breaker.
What tools are needed to solder circuit boards?
Soldering iron, solder, flux
What gauge wire is needed for a 220 50 amp circuit?
AWG #6
What is the formula the breakers in panel?
There is no formula used to fill a distribution panel. The panel is loaded according to the circuits that are to be connected to it. After you have determining what breakers are needed always buy a distribution panel that has more slots than you need. The extra cost of buying a panel with more slots in it will pay for itself in the future if additional circuits need to be added.
Why is hvac not cooling house?
First question would be did it ever work ok. If not it could be undersized or a repair is needed. Fuses, circuit breakers? Coils clean and filters clean?
What property would you be testing for if you are using a circuit breaker?
A circuit breaker is not a test instrument, it is a kind of switch that interrupts the supply when that is needed, but it is more than that because circuit breakers are specialised items, and examples exist that can interrupt currents of hundreds or thousands of amps at very high voltage.
Why are air conditioners used?
Air conditioners are needed in hot climates to reduce the temperature and humidity of the air. Humans like to be comfortable.
How many air conditioners btu are needed for a living room?
About 8,000 BTU
What are the required for electrical panel?
The main items required for an electrical panel include the panel box itself, fuses, and wiring. The wires are fed into the box and attached to a series of circuit breakers to allow electricity to be directed as needed.
Is a switch needed to make a circuit work?
Not always. Depends on the circuit.
Are project managers needed for a project?
Yes. They are one of the most important members of a project.
How many Breakers needed to wire an electric furnace?
The electric furnace operates on 240 volts so a two pole breaker is needed.
What is needed if a certain circuit in a vehicle caught fire due to a short circuit?
This circuit needed to have a fuse installed before the circuit was energized. Now the circuit is going to need new wiring along with a fuse before the system is re energized.
What pushes the current around the circuit?
A voltage supply is needed to operate a circuit.
Which vitamins that can loose weight and helps anti hair fall?
I think you can ask a doctor what shampoo or conditioners are needed.
Why is earth wire not needed in a light circuit?
A ground (earth) wire is needed in not just a light circuit but in all circuits that are now installed.
