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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.
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∙ 15y ago
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∙ 12y ago795 MCM is not a standard size wire. The following is not a free air rating but is for, not more that 3 aluminum conductors in a raceway. 750 MCM AL 90 degree C wire is rated at 405 amps. 800 MCM AL 90 degree C wire is rated at 415 amps
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∙ 12y ago500kciml has been rated as 380A (for connection to non-ANSI protective devices)
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∙ 14y ago410 Amps @ 90°c with 3 or less conductors in the conduct.
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∙ 12y agoA 750 MCM aluminum wire with an insulation factor of 75 or 90 degrees C is rated at 385 and 405 amps respectively.
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∙ 12y agoThe rating of 350 MCM aluminum wire with insulation rated at 60, 75 and 90 degrees C is 210, 250 and 260 amps respectively.
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∙ 11y agoA 750 MCM copper conductor with an insulation factor of 75 and 90 degree C is rated at 475 and 500 amps respectively.
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∙ 10y agoA 500 MCM conductor with an insulation factor of 75 or 90 degrees C is rated at 380 and 430 amps respectively.
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∙ 14y ago#1 MCM copper wire is rated at 140 amps.
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400 amps
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What is the circuit breaker rating required for a motor with a 250 Ampere full load current?
A motor that is rated at 250 full load amps will need 400 amp time delay fuses or a 500 amp frame breaker with adjustable amperage trips. The wire size for this motor has to be 125% of the motors FLA. 250 x 125% = 312 amps. A 350 MCM copper conductor with an insulation factor of 90 degrees C is rated at 325 amps.
What size SER cable to use for 375amp load?
A 400 MCM copper conductor with an insulation temperature factor of 90 degrees C is rated at 380 amps.A 500 MCM copper conductor with an insulation temperature factor of 75 degrees C is rated at 380 amps.These conductors can have either 600 or 1000 volt insulation rating depending on what the system voltage in use is.
How do you find the current rating of a zener diode if the power rating is 500mw and a voltage rating of 10v?
A zener diode with a rating of 500 mW will pass 50 mA at 10 V. (Power = voltage times current)Note: The question appears mis stated, in that it states a rating of 500 MW, not 500 mW. To my knowledge, there is no zener with a rating of 500 MW.
How much current does 300 sq mm cable carry?
A 228 sq mm conductor equates to 450 MCM. A conductor of 450 MCM is not a standard AWG wire size. A standard 400 MCM will carry 380 amps. A standard 500 MCM will carry 430 amps. Difference between 400 and 500 MCM amperage's is 50 amps. Transposing between the two amperage's of 50 amps will be 380 + 25 = 405 or 430 - 25 = 405 amps. This is a very rough calculated answer for the question.
How can we calculate cable size for 800A breaker?
Wire sizing is based on the load that the conductors carry. The breaker is then sized to protect the wire. To get to an amperage the wires are going to have to be paralleled. The calculations are already sized in the electrical code books, CEC and NEC. These are code books used by North America electricians. A 500 MCM conductor with an insulation factor of 90 degrees C is rated at 430 amps. Four 500 MCM conductors paralleled will give you an ampacity of 1720 amps. The breaker will need to have a 500 MCM 4 barrel lug to receive the conductors. The same thing with the load end, it will also need a four barrel 500 MCM lug.
What size wire is required for 325 amp service?
A 350 MCM copper conductor with an insulation rating of 90 degree C is rated at 350 amps.
What gauge is 500 amp cable?
A 750 MCM copper conductor with an insulation factor of 90 degrees C is rated at 500 amps.
What size copper wire for a run of 500 feet in parallel for a resident with a load of 600 amps single phase 240 volt?
This is a voltage drop question. A 500 MCM copper or 750 MCM aluminium conductor will limit the voltage drop to 3% or less when supplying 300 amps for 500 feet on a 240 volt system. Paralleling these conductors will allow the rating to be increased to 600 amps.
What is the circuit breaker rating required for a motor with a 250 Ampere full load current?
A motor that is rated at 250 full load amps will need 400 amp time delay fuses or a 500 amp frame breaker with adjustable amperage trips. The wire size for this motor has to be 125% of the motors FLA. 250 x 125% = 312 amps. A 350 MCM copper conductor with an insulation factor of 90 degrees C is rated at 325 amps.
How do you find ampere rating of a 500 kva genset?
If you know the voltage being supplied, divide that into 500kVA. For example for 120 Volts the amperage would be 500,000/120 = 4166.66 Amps.
Wire size for 500 Amp service?
000 <<>> A 750 MCM copper conductor with an insulation factor of 90 degrees C is rated at 500 amps.
What size SER cable to use for 375amp load?
A 400 MCM copper conductor with an insulation temperature factor of 90 degrees C is rated at 380 amps.A 500 MCM copper conductor with an insulation temperature factor of 75 degrees C is rated at 380 amps.These conductors can have either 600 or 1000 volt insulation rating depending on what the system voltage in use is.
What wire size do you need for a 3phase 90amp 60hz 220v?
Wire size is based on the amperage capacity of the service it is feeding. You tell me the service amps and I can tell you the wire size.
How do you find the current rating of a zener diode if the power rating is 500mw and a voltage rating of 10v?
A zener diode with a rating of 500 mW will pass 50 mA at 10 V. (Power = voltage times current)Note: The question appears mis stated, in that it states a rating of 500 MW, not 500 mW. To my knowledge, there is no zener with a rating of 500 MW.
How much current does 300 sq mm cable carry?
A 228 sq mm conductor equates to 450 MCM. A conductor of 450 MCM is not a standard AWG wire size. A standard 400 MCM will carry 380 amps. A standard 500 MCM will carry 430 amps. Difference between 400 and 500 MCM amperage's is 50 amps. Transposing between the two amperage's of 50 amps will be 380 + 25 = 405 or 430 - 25 = 405 amps. This is a very rough calculated answer for the question.
How much amperage does a gas clothes dryer draw?
Check the nameplate rating on the door or door frame of your washer, it should tell you the amp rating or the kw rating of the machine. If it only has the KW rating of the machine, simply divide the KW rating by the voltage of the receptacle and it'll give you the current (ampere) rating. Typically, a modern washing machine will draw approximately 7-12 amps. However, anticipate a higher amperage when starting the machine as the machine will draw 1.5X the rated current to start the machine (starting current). Regardless of the amp rating, the NFPA-70 (National Electrical Code) requiresa 20 Amp fuse or circuit breaker; and the circuit for the washing machine must be on its own, dedicated circuit.
What is the minimum size neutral for three sets of parallel 500kcm copper conductors for a service?
On large service entrance services the neutral can be reduced. The amperage of the service and the voltage of the service and the insulation factor of the 500 MCM conductors need to be stated to answer this question correctly.
