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Wire size determines how much current can be safely conducted. Insulation type and rating determines other factors, such as where the wire can be used and maximum voltage.

It should be noted that the high voltage lines that are hanging from the really large electrical towers are among a class of wires that have NO insulation around the outside of the wire. They are instead, connected to the towers with large insulators that prevent electrical energy from being lost through the towers.

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โˆ™ 2011-05-26 14:11:18
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Q: What is more important for amperage rating wire size or insulation temperature rating?
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What is The amperage rating of 350 MCM copper wire?

It depends on a lot of factors. Generally speaking, if the insulation is THHN then the rating is 350 amps. If the insulation is THWN then the rating is 310 amps. The ampere rating for wire depends on the temperature of the environment it will be used in, the insulation rating and the number of circuits installed in a conduit. There are also other factors to consider... like voltage drop in long runs.


It is ok to use a fuse with a higher amperage rating and not ok to use a fuse with a smaller amperage rating why?

It is ok to use a fuse with a higher amperage rating and not ok to use a fuse with a smaller amperage rating why?


100 amp subpanel from 200amp service what size wire do you use?

A #3 copper wire with insulation rating of 90 degrees C has an amperage rating of 105 amps.


Twelve-gauge wire is rated to carry how many amperes?

20 Amperes per NEC A #12 copper wire, insulation rating of 90 degree C, has an amperage rating of 20 amps.


What is the amperage rating on number 8 gauge wire?

A #8 copper wire insulation rating of 90 degrees C is rated at 45 amps. At 75 C = 45 amps, at 60 C = 40 amps.


What is the amperage rating of 500 MCM copper conductor?

A 500 MCM conductor with an insulation factor of 75 or 90 degrees C is rated at 380 and 430 amps respectively.


Can you operate a transformer below kva rating?

What limits the use of a transformer is its operating temperature, as excessively-high temperature will act to break down its insulation. The temperature reached by a transformer is a function of its rating (expressed in volt amperes), so operating a transformer below its rating is perfectly okay.


What is the amperage rating for 750 MCM aluminum wire?

A 750 MCM aluminum wire with an insulation factor of 75 or 90 degrees C is rated at 385 and 405 amps respectively.


What is the amperage rating for 750 MCM copper wire?

A 750 MCM copper conductor with an insulation factor of 75 and 90 degree C is rated at 475 and 500 amps respectively.


Which unit describes the difference in conduction between the wires amps or volts?

In regards to the capacity of a conductor, the rating is in amperage. Voltage is an insulation factor which refers to the amount of voltage that can be applied to an insulated conductor before the insulation breaks down. A break down of insulation is the main factor of creating a short circuit condition.


What is the maximum temperature rating of a wire's insulation on a conductor?

The four main conductor insulation rated temperatures that are used in the electrical trade are 60, 75, 90, and 105 degrees C.


Is amperage rating and running amperage the same thing?

Usually the current rating for a circuit is higher than the current usually taken. This leaves a little margin for safety.


Can you use 600 volt 14 ga wire on an electric dryer?

The maximum amperage that can be applied to a #14 wire is 15 amps. The 600 volts is just an insulation rating. Check the nameplate on the dryer to see what the amperage and voltage the manufacturer recommends. If the nameplate just states a wattage use the following formula to find the amperage. Amps = Watts/ Volts.


Will a fuse of a higher amperage rating have a higher melting point link?

No, a fuse of a higher amperage rating will not usually have a higher melting point link. The higher amperage fuse will use a wider link or a link of larger diameter.


Does a high rating mean lots of insulation or little insulation?

It depends what you mean by a 'high rating'!If you mean a high 'voltage rating' then, yes, you will require thicker insulation. But if you mean a high 'power rating', then, not necessarily, because the voltage can be low, while the current is high.Remember, the thickness of insulation depends on the voltage, while the type of insulation (how it withstands higher temperatures) depends on the current.


What is the amp rate for 25mm wire?

The amperage rating is dependent upon the insulation rating. A pair of 25mm squared wires touching each other are rated at 131 amps. Three 25mm squared wires touching each other are rated at 110 amps.


What is the difference by v-75 PVC sheathed insulation and v-90 v-75 PVC sheathed insulation?

V90 is a higher temperature rating than V75. V90 cables can conduct more current without over heating/melting its insulation. V110 is a higher rating than V90.


What is the amperage rating of 800 MCM Copper wire?

600amps


How many amps does a wire rated at 600 have?

This answer is if you are referring to the sizing of electrical conductors in North America using the AWG for sizing. An American Wire Gauge sizing of 600 refers to the cross sectional area of the conductor.This amperage value is for a single copper conductor.A 600 MCM copper conductor with an insulation rating of 75 or 90 degrees C is rated for 690 and 780 amps respectively.This amperage value is for not more than three copper conductors in a conduit or raceway.A 600 MCM copper conductor with an insulation rating of 75 or 90 degrees C is rated for 420 and 475 amps respectively.This amperage value is for a single aluminium conductor.A 600 MCM aluminium conductor with an insulation rating of 75 or 90 degrees C is rated for 545 and 615 amps respectively.This amperage value is for not more than three aluminium conductors in a conduit or raceway.A 600 MCM copper conductor with an insulation rating of 75 or 90 degrees C is rated for 340 and 385 amps respectively.


How many amps will 6 gauge wire carry?

A #6 AWG copper wire with 60 degree Celsius insulation rating can carry 55 amps, 75 degree Celsius insulation rating can carry 65 amps, and a 90 degree Celsius insulation rating can carry 75 amps. If it is aluminum or copper-clad aluminum the ampacity for the three temperature ratings would be 40, 50, and 60 respectively.


What is the amperage rating for 8 gauge wire?

24 Amps maximum.


What is the maximum temperature rating of a intimated conductor?

I have never heard of the electrical term intimated conductor. Conductors are rated on their insulation factor. The number that is stamped on the conductor's insulation is the maximum ambient temperature that the conductor can be submitted to. Most home building cables are rated at 75 and 90 degrees C.


What color are radio fuses?

Look in your owner's manual or on the fuse panel to see the correct amperage rating for the fuse. The fuse itself will have the amperage rating, but it is possible that someone (at one point in time) put the wrong amperage fuse in, so verify that with the owner's manual or the fuse panel.


How many amperes circuit will 6 gauge wire carry?

A #6 copper conductor with an insulation factor of 75 or 90 degrees C both have an amp rating of 65 amps. If the #6 conductor is connected to a breaker having a 90 degree C rating then the conductor can carry an amperage of 75 amps


An R-value is a rating for materials used as?

insulation