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A #8 copper wire with an insulation factor of 75 or 90 degrees C has a rating of 45 amps. The load amperage and voltage must be stated to give a voltage drop calculation.
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The answer requires more information i.e. what is the voltage how far do you want to run the #8 wire?
#8 wire is limited to carrying 24 amps per the National Electrical Code is it's carrying power for transmission from one point to another. It also exhibits a resistance of .682 ohms per 1000 feet so this resistance relates to voltage drop at the end of a piece of wire. Normally a run of 300 to 500 feet is no problem as long as you are prepared to have a little less current at the end of the wire.
The way the wire is run also has a great deal to do with the distance. If it's placed in a raceway (read conduit) by itself or with other conductors then the wire ampacity must be derated.
As you see, there's a lot to it. The best rule of thumb is that is you need 20 amps at a 1000 feet, use the next size wire or AWG #6.
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∙ 14y ago
Wiki User
∙ 13y agoTo answer this question the load amperage is needed.
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What size wire is needed to run a 75 amp 240 volt circuit with 100 ft run?
I would use AWG # 4 copper.
What size wire is required to run 100 amp service 100 yards?
I would recommend you use AWG # 2 copper or AWG # 1/0 aluminum for that distance and amperage.
What wire size should you use for with a 50 amp breaker?
Breakers and wires can not be connected together this way. It is the amperage of the load that govern the wire size.The breaker is then chosen to protect the wire size amperage. It also depends on what the load is. If it is a motor, then the breaker is 250% of the motors full load amperage, even though the wire size remains the correct size to carry the motors full load amperage. A #6 copper conductor with an insulation rating of 90 degrees is rated at 60 amps.
What size wire for 110 feet of 220 volt wire to a 30 amp planer?
The length of run and voltage are irrelevant, rating of the cable and where/how it is installed are what matter.30A cable is 6mm2A #3 AWG copper conductor will limit the voltage drop to 3% or less when supplying 30 amps for 200 feet on a 110 volt system.
What size wire is needed for 6.3 amps 240 volts 50 foot run?
14 AWG is fine for this application.
What size wire is needed to run a 75 amp 240 volt circuit with 100 ft run?
I would use AWG # 4 copper.
What size wire to run air handler which requires a 100 amp breaker?
If the run is less than 100' use 4 AWG copper.
What size wire is required to run 100 amp service 100 yards?
I would recommend you use AWG # 2 copper or AWG # 1/0 aluminum for that distance and amperage.
How does length of run affect the wire gauge to be used?
The longer the run, the bigger and heavier the wire will need to be. The AWG number denotes the diameter of the wire: the smaller the AWG number, the bigger the diameter.
What size wire do you need to run overhead to a 50 amp service five hundred feet away?
For that distance I would run AWG # 3 copper and install a sub-panel.
What size wire for 100 amp panel in detatched garage?
i just left lowes an they told me to run 100 amp to my building i would need wire size 2-2-2-4 alumninum and run it in conduit the lowes around here does not sell copper wire that size
What type of wire do you need to run a 60 amp sub panel with 3 20 amp single breakers in the panel?
I would use 4 AWG copper to be safe.
What size wire for 30 amp breaker 240 volts 100 feet?
That distance you are going to have to install a sub-panel and run AWG # 4 wire and even then you will have a voltage drop of 7.45 volts giving you 232.55 volts at the sub-panel which is acceptable.
How many amps is 3 awg wire good for?
It depends on the application, but for Single-Phase dwelling service and feeders 3 AWG copper is good for 110 amps. That really equates to 100 amps since you can't get a 110 amp circuit breaker.
What gauge wire do you run between a 30 amp breaker and an outlet?
10 AWG.
What size wire for 72 amp motor?
You will need AWG #3 if it is a short run.
What is the amp size of 10 awg wire?
A 10 AWG wire is typically only rated for 30 amps, but conditions such as length of run, whether the wire is to be used in a "plenum", temperature and other factors may affect the type of wire that you must use for a specific application. If you have any questions, contact a qualified electrician or your local building inspector.
