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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.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoThese cable sizes can be calculated by going to the table, Allowable ampacities for not more that 3 copper conductors in a raceway or cable, in an electrical code book.
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What is the type and size of cable gland or 2 core cable?
To answer this question the size of the cable or the amperage of the load is needed to calculate the correct wire size and connectors to fit the cable.
What is the standard to select circuit breaker?
Add up your amps to calculate your breaker size. Add up your loads (amps), divide by 0.8, and choose that size breaker. If that number does not correspond to a standard size breaker you go to the next higher standard size breaker.
What size of wire use for 3kw motor 380volts 3phase?
How to calculate a cable size of 3kw motor
What cable size needed for 3KW geyser?
You need to know the amperage requirement of the pump and then you can calculate the wire size.
For 100kw which cable size is good and how to find out cable size?
100 kw is the power drawn by the load. to calculate the cable size you need to know the voltage. From that you can calculate the current. this decides the cable size. for example if the voltage is 400Volts then the current flowing in the circuit when the load is 100 KW will be 250 amps. (100,000/400). for 250 amps to flow with out causing excessive heating of the cable the cross sectional area of the copper cable should be 150 sq mm.for a round cross section the diameter will be roughly 15mm.
How do you calculate cable gland size?
4cx95mm aws which size of cable gland
What is the type and size of cable gland or 2 core cable?
To answer this question the size of the cable or the amperage of the load is needed to calculate the correct wire size and connectors to fit the cable.
What size breaker do you need for 3kva?
To calculate an answer a voltage must be stated.
What is the standard to select circuit breaker?
Add up your amps to calculate your breaker size. Add up your loads (amps), divide by 0.8, and choose that size breaker. If that number does not correspond to a standard size breaker you go to the next higher standard size breaker.
What size cable and breaker would be required for a 3phase 6.2kw 50hz fan 11Amps with a 20metre cable run?
4sqmm
What is the smallest size circuit breaker found in the normal home?
The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.
How calculate the cable size when give current?
The NEC has a table that shows what size cable to use with each amperage and where it can be used.
What is the cable size for a 3KW motor 350 meter run for cable 240v?
Assuming being fed by c32 breaker for start load minimum cable size SWA is 70mm which will go to 456 meters
What size of wire use for 3kw motor 380volts 3phase?
How to calculate a cable size of 3kw motor
How do you calculate amp draw for 115v 1 phase and the breaker size?
To calculate the amp draw of a device you need to use one of the following three formula. I = W/E, I = E/R, I =√W/R. Once the amperage of the circuit is found then the size of the breaker can be established.
Could you Calculate cable size for 100 kw load?
Yes I could. How?
What size wire and breaker do you need to run a 9000max watt generator?
If it is a portable generator the breaker should be self contained within the generators panel. If the generator is a stationary standby unit a voltage has to be stated to calculate the conductor size and hence the breaker size to protect the conductor. Amps = Watts/Volts.
