**1. A conservative method stated in AS/NZS 3008.1.1**

The Standard AS/NZS 3008.1.1 states how to calculate the voltage drop for unbalanced 3 phase load in Section 4.6 - "a __conservative __method to calculate voltage drop for unbalanced multi-phase circuits would be assume balanced three-phase load condition and perform calculations using the current flowing in the ** heaviest-loaded** phase".

**2. Implement the method in** **cloud-based ****Cable Pro Web**** software**** **

Enter the ** heaviest** load of 3 phase into 'Current' in 'Load' section.

**Cable Pro Web**will automatically perform the voltage drop calculation with the specified current. The calculated voltage drop is based on the assumption that the three-phase loads are balanced which is the conservative value as the Standard states.

**Reference:**

[1] AS/NZS 3008.1.1:2017 Electrical installations—Selection of cables Part 1.1: Cables for alternating voltages up to and including 0.6/1 kV—Typical Australian installation conditions

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