Here is the full AWG wire size chart (including wire ampacity chart):
| AWG Number | Diameter (inches) | Diameter (mm) | Cross-Section (mm2) | Ampacity (at 75°C) |
| 0000 (4/0) AWG | 0.4600 in | 11.684 mm | 107 mm2 | 230 Amp |
| 000 (3/0) AWG | 0.4096 in | 10.405 mm | 85.0 mm2 | 200 Amp |
| 00 (2/0) AWG | 0.3648 in | 9.266 mm | 67.4 mm2 | 175 Amp |
| 0 (1/0) AWG | 0.3249 in | 8.251 mm | 53.5 mm2 | 150 Amp |
Full Answer
What size aluminum wire for 150 amp service?
while for an ALUMINUM SEC wire the ratings were 115 / 135 / 150 Amps at those temperature ratings. That's why you're going to find that not 2/0 wire (as you offered) bur rather 4/0 will be where you start for Aluminum SEC cabling if your electrical service size is 200 Amps.
How many circuits are on a 150 amp panel?
Square DQO 150 Amp 42-Space 52-Circuit Indoor Main Breaker Plug-On Neutral Load Center with Cover. (11) Model# QO142M150PC. Square DQO 150 Amp 2-Pole Outdoor Circuit Breaker Enclosure with QDL22150 PowerPact Q-Frame Breaker. Model# Q2150MRBE. Leviton150 Amp 42-Space Indoor Load Center with Main Breaker.
What size cable size for 150 amp?
Well that all depends. First off, it depends on the type of wire used. With something like THWN-2 you'd get 150A out of #1, for THWN you'd only get 130 and would need to size up to 1/0. You might also want to consider sizing up for voltage drop issues. 150A over 260 feet on #1 will be almost 12 volts of drop.
What size conductors are needed for 150 amp service?
You should get 2/0 AWG Copper wire or 4/0 AWG Aluminum wire for single-phase circuits. And, 1/0 AWG Copper wire or 3/0 AWG Aluminum wire if you have three-phase circuits. For these wires, the average voltage drop should be 3%. But it varies according to source voltage.
What size wire do I need for 150 amp service?
SERVICE ENTRANCE CONDUCTORS SIZE AND RATINGService or Feeder RatingCopper ConductorsAluminum or Copper-Clad Aluminum100 Amps#4 AWG#2 AWG125 Amps#2 AWG#1/0 AWG150 Amps#1 AWG#2/0 AWG1 more row
What size wire do I need for 200 amp service?
The Short Answer: Like with aluminum, you'll need a #4/0 copper-clad aluminum wire for a 200 amp service.
How do I calculate what size wire I need?
How do I calculate wire size for motors?Multiply the resistivity (Ω•m) of the conductor material by the peak motor current (A), the number 1.25, and the total length of the cable (m).Divide the result by the voltage drop from the power source to the motor.Multiply by 1,000,000 to get the result in mm2.
What size wire do I need to run 100 amps 150 feet?
#00 AWG wireWire Size For 100 Amp Sub Panel 150 Feet Away 100 amp service 150 feet away from the sub panel requires #00 AWG wire (also known as 2/0 AWG wire). This wire has a median ampacity of 175 amps; more than enough than the required minimum 162.5 ampacity.
Will #2 wire fit in a 100 amp breaker?
A 100 amp sub panel wiring size requirement is #4 for copper wires and #2 for aluminum wires.
What size wire do I need for a 100 amp underground 300 ft run?
for 300 feet for 100 amp rated service I would use Aluminum direct burial 1/0-1/0-1/0-1/0, the forth can be as low as #4 for the ground (but also in conduit, even if in conduit must still be rated underground wire and required by code also) Also note the size wire the breaker can handle, cannot cut strands to make fit, ...
What size wire do I need for 100 amps?
Wiring a 100 amp breaker panel requires either #4 copper wiring or #2 aluminum or copper-clad wiring.
What size wire do I need for a 100 amp sub panel?
The cable must have a wire gauge sufficient to the amperage of the subpanel—a 100-amp subpanel requires #4 copper wires or, more commonly, #2 aluminum wires, for example. (Aluminum is often used for feeder cables because the cost is typically much lower than that of copper wires.)
How much electrical wire do I need?
Figure out the length of each circuit, using your home's floor plan, and add this length to all the other lengths for that wire gauge. Add a 10 percent overage to the final summation to account for twists, bends and backtracks.
What size wire do I need to run a 100 amp service 200 feet?
Like I said before, for 100 AMP service, you'll need a #4 AWG copper wire or #2 AWG aluminum or copper-clad wire. If you're looking to install 200 AMP service, you'll need a #2/0 AWG copper wire or a #4/0 AWG aluminum or copper-clad wire.
What wire size do I need to go 100 feet for a 100 amp service to a workshop?
For a 100 ampere circuit, the conductors will likely be required to be 3 AWG copper or 1 AWG aluminum.
How far can you run #2 aluminum wire?
400 ft.Example calcuation 2 - Aluminum Wire, 1 phase power Cable run: 400 ft. 1 conductor per phase utilizing a 1000 kcmil Aluminum conductor installed Direct Buried will limit the voltage drop to 2.61% or less when supplying 194 amps for 400.0 feet on a 240 volt 1 phase system.
10 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 110V-120V Circuit
If you’re looking for wire size for a 10 amp circuit (this can be for a 10 amp 120-volt circuit, breaker, battery output), you will need an AWG with at least 10 amp rated ampacity at 75°C.
15 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 110V-120V Circuit
If you’re looking for wire size for a 10 amp circuit (this can be for a 15 amp 120-volt circuit, breaker, battery output), you will need an AWG with at least 15 amp rated ampacity at 75°C.
20 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 220V-240V Circuit
If you’re looking for wire size for a 20 amp circuit (this can be for a 20 amp 220-volt circuit, breaker, battery output), you will need an AWG with at least 20 amp rated ampacity at 75°C.
25 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 220V-240V Circuit
If you’re looking for wire size for a 25 amp circuit (this can be for a 25 amp 220-volt circuit, breaker, battery output), you will need an AWG with at least 25 amp rated ampacity at 75°C.
30 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 220V-240V Circuit
If you’re looking for wire size for a 30 amp circuit (this can be for a 30 amp 220-volt circuit, breaker, battery output), you will need an AWG with at least 30 amp rated ampacity at 75°C.
40 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 220V-240V Circuit
If you’re looking for wire size for a 40 amp circuit (this can be for a 40 amp 220-volt circuit, breaker, battery output), you will need an AWG with at least 40 amp rated ampacity at 75°C.
50 Amps Wire Size: AWG Gauge, Breaker, Suggestion For 220V-240V Circuit
If you’re looking for wire size for a 50 amp circuit (this can be for a 50 amp 220-volt circuit, breaker, battery output), you will need an AWG with at least 50 amp rated ampacity at 75°C.
How many amps does a house circuit need?
Usually, a general-purpose house circuit is designed for 20 amps. Lighting circuits may be designed for only 15 amps. To calculate the load requirement for a circuit, first add up the wattage of all the electrical devices that will be on the circuit.
What is the maximum current a conductor can carry continuously under the conditions of use without exceeding its temperature rating?
Ampacity is the maximum current that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. Current is measured in amperes or “amps.” You must use the correct size wire for the current (load) requirement of the circuit to prevent the wire from overheating.
Why do utilities not have to follow the same wire gauge?
They do not have to follow the same wire sizing gauge as specified in the NEC because the NEC does not govern utility companies.
Do you have to follow the same wire gauge as specified in the NEC?
They do not have to follow the same wire sizing gauge as specified in the NEC because the NEC does not govern utility companies. The recommendations provided on this site are generally taken from NEC tables which does apply to work performed on most residential and commercial spaces in the United States.
What determines the ampacity of a wire?
However, many different external factors such as ambient temperature and conductor insulation play a part in determining the ampacity of a wire. Wire ampacity is calculated in such a way as to not exceed a certain temperature rise at a particular electrical load.
How many wires are needed for a three phase circuit?
For three-phase circuits, four wires are required. One of these wires is a ground wire which can be sized down. To calculate ground wire size, use the Ground Wire Size Calculator. Insulation - Select the thermal rating of the insulation on the wire. Conductor - Choose the material used as a conductor in the wire.
What is the purpose of sizing electrical wire?
The National Electrical Code provides requirements for sizing electrical wire to prevent overheating, fire and other dangerous conditions. Properly sizing wire for many different applications can become complex and overwhelming. Amperage is the measure of electrical current flowing through a circuit. The ampacity rating of a wire determines the amperage that a wire can safely handle. In order to properly size a wire for your application, the ampacity ratings for a wire must be understood. However, many different external factors such as ambient temperature and conductor insulation play a part in determining the ampacity of a wire.
What is the measure of electrical current flowing through a circuit?
Amperage is the measure of electrical current flowing through a circuit. The ampacity rating of a wire determines the amperage that a wire can safely handle. In order to properly size a wire for your application, the ampacity ratings for a wire must be understood.
How does the cross section of a conductor affect the resistance of a wire?
However, the cross-sectional area of a conductor can also be changed to alter the conductor's resistance. By increasing the cross-section of the conductor (or increasing the size of the wire), the resistance decreases, and the allowable ampacity increases .
What is the difference between a single phase and a three phase circuit?
Single-phase voltages are usually 115V or 120V, while three-phase voltages are typically 208V, 230V or 480V. Amperes - Enter the maximum current in amps that will flow through the circuit. For motors, it is recommended to multiply the nameplate FLA by 1.25 for wire sizing.
What are the different types of electric motors?
There are many different types of electric motors ranging from single-phase to three-phase AC motors, low and high voltage DC motors, synchronous and asynchronous motors. When designing a feeder or branch circuit with one or more electric motors, there are several important things to account for.
200 Amp Wire Gauge Calculation: What Size Wire You Need For 200 Amp Circuit?
To adequately determine the 200 amp wire gauge, you first need to calculate the minimum ampacity requirement as per 80% NEC rule.
How To Account For Sub Panel Being 100 Feet Away?
When sending electricity a longer way from the sub panel, the voltage will drop with the distance. To counter this drop, you have to boost the initial amps. That means that the circuit has to handle more amps; in turn, the wire you’re using has to handle more amps.
A Rule of Thumb
Amounts
- Suppose you are unsure of which type of material you are dealing with or don’t know the right temperature. We always suggest erring on the side of caution. For that reason, our recommendations will always suggest a safe choice given the ambient temperature. It’s always better to choose a bigger diameter if you are unsure about any conditions that could influence th…
What Is A Gauge?
- The gauge is the diameter of the product. This determines how much electrical current it can safely carry. If you have ever been to the electrical section of a hardware store, you will notice it comes in several options. Instead of referring to its actual thickness, people use its gauge. 6 and 4 are just some of the numbers you’ll encounter. You could also come across gauges like 1/0, 2/…
Choosing The Right One
- They usually burn if you use the incorrect one. It is advisable to know the correct one to prevent this from happening. The bad thing is that most people are not aware that your choice makes a difference. People often make the connections themselves without consulting or calling a licensed electrician. It could lead to serious issues when done incorrectly. When the setup involv…
What Happens When You Choose The Wrong One
- It is a common misconception for people to think that as long as the ends of the wire fit a connector, there will be no issues. It is not the case for circuit breakers. People unaware of their importance often use too small gauges to connect their circuit breakers. Smaller diameter ones are cheaper than the bigger ones. Unaware people often go for the cheaper ones, thinking it will …
Standard Wire Gauge Chart
- You should know that it is important to have a licensed electrician handle any electrical work. It helps to know some basic electrical things, such as the right gauge. The chart electricians use as their reference will differ depending on the region. Using a standardmeasurement instrument is easy to answer your questions about the product’s diameter. We use the AWG system in the Unit…