How do you calculate cable size in kva?

Ok, let’s dive into calculations…

1. Consumed Load = Total Load · Demand Factor: Consumed Load in KW = 80 · 1 = 80 KW.
2. Consumed Load in KVA = KW/P.F.: Consumed Load in KVA = 80/0.8 = 100 KVA.
3. Full Load Current = (KVA · 1000) / (1.732 · Voltage): Full Load Current = (100 · 1000) / (1.732 · 415) = 139 Amp.

How do you determine the thickness of a wire?

Stranded wire gauges should be measured by calculating the equivalent cross sectional copper area. First, measure the bare diameter of a single strand and locate the circular mils value in the row that matches your measurement. Second, multiply the circular mils by the number of strands in the cable.

How do you calculate maximum cable length?

When two or more load cells are used, the formula is as follows: The maximum cable length = the allowable cable resistance ÷ the cable resistance per meter ÷ the number of load cells.

How do you calculate the size of wires and cables?

To find the cable size, you need to find the load current. Then based on the material you want to use (Copper or aluminium) for the cable, divide the load current by the multiplication factor (4 for Aluminium and 6 for Copper). Originally Answered: How do you calculate the size of wires and cables depending on the load?

What is single & three phase line kVA calculator?

Single & Three Phase Line kVA calculator is an online tool used in electrical engineering to measure the unknown quantity by two known quantities applied to the below formulas for single phase and three phase connection. To calculate kVA, you need to enter the known values of voltage and the current into the respective fields.

How to calculate the wire size of a single phase circuit?

You can also check the classical Wire & Cable Size Calculator in (AWG) Calculating Wire/Cable Size formula for single Phase Circuits Wire Circular mils = 2 x ρ x I x L / (\% Allowable Voltage drop of source voltage)

What do the a and t mean on the wire size calculator?

A is the conductor area in circular mils. t is the short circuit time in seconds. is the maximum operating Temperature. The wire size calculator uses 75°C for PVC and 90° for XLPE. is the maximum short circuit temperature. The wire size calculator uses 150°C for PVC and 250°C for XLPE.