Allowable ampacities for a single 350 MCM aluminium conductor with an insulation factor of 90 degrees C is rated at 445 amps.
Allowable ampacities for no more that three 700 MCM aluminium conductors in a conduit with an insulation factor of 90 degrees C are rated at 425 amps.
A #4 copper conductor will limit the voltage drop to 3% or less when supplying 25 amps for 400 feet on a 120 volt system.
This answer is taken from the CEC. Table 17 states minimum size of grounding conductors. For a service conductor drawing 400 amps a #3 copper grounding conductor is needed. Also see rules 10-206, 10-700 and 10-812 if you have access to the code book.
To answer this question a voltage needs to be stated. The formula needed to find the amperage is I = W/E. Amps = Watts/Voltage. Once the amperage is found, the proper size conductor to handle that current can be established. Without knowing the amperage on 400 watts a good guess would be a #14 wire. This wire size is good up to 1440 watts at 120 volts.
The ampacity of a 400 kcmil (thousand circular mils) conductor depends on factors such as the conductor material (copper or aluminum), insulation type, and installation conditions. For example, a 400 kcmil copper conductor can typically carry around 400 to 600 amps at standard temperature ratings in open air or conduit, while an aluminum conductor of the same size may carry slightly less. Always refer to the National Electrical Code (NEC) and local codes for precise applications and ampacity tables.
Need to know what size service is going to be installed at the end of the run.
A #4 copper conductor will limit the voltage drop to 3% or less when supplying 25 amps for 400 feet on a 120 volt system.
This answer is taken from the CEC. Table 17 states minimum size of grounding conductors. For a service conductor drawing 400 amps a #3 copper grounding conductor is needed. Also see rules 10-206, 10-700 and 10-812 if you have access to the code book.
Answer for USA, Canada and countries running a 60 Hertz supply service.CEC states that a #3 bare copper conductor is a common grounding conductor size for a 200 amp service panel and it is the minium size for service raceway and service equipment of 400 amps.
For a 400 Amp service with 500 MCM conductors, the minimum size grounding electrode conductor required would be 3/0 AWG copper or 250 kcmil aluminum based on the NEC Table 250.66.
To answer this question a voltage needs to be stated. The formula needed to find the amperage is I = W/E. Amps = Watts/Voltage. Once the amperage is found, the proper size conductor to handle that current can be established. Without knowing the amperage on 400 watts a good guess would be a #14 wire. This wire size is good up to 1440 watts at 120 volts.
It takes an NGK DPR8Z
It depends on the length of the run
Use this formula to find amperage when kW is shown. Amps = kW x 1000/1.73 x Volts x pf. Use a power factor of .85 for the formula. Once the current is calculated re-ask the question for cable size for the calculated current.
In a 400 amp wire size chart, you can find information about the appropriate wire size to use for a 400 amp electrical circuit. This includes details such as the gauge of the wire, the maximum current capacity it can handle, and the type of insulation required for safety and efficiency.
Need to know what size service is going to be installed at the end of the run.
Assuming you are working with 240v, you need 4/0 copper conductors.
To calculate the capacity in megawatts of a 400 kV power line, you need to consider the current carrying capacity of the line. This is typically based on factors such as conductor size, ambient temperature, and the type of insulation used. Once you have the current carrying capacity, you can use the formula P = V x I to calculate the power capacity in megawatts, where P is power in MW, V is voltage in kV (400 kV in this case), and I is current in amperes.