Question regarding Voltage Drop Calculations

[static zap]

Why would the L and N conductors be of differing sizes....

Impropper cable stripping proceedure !
(may need a micrometer to spot it )

don't forget -neutal needs to be thinner to equalize longer live paths ..Joking

 

[Des 56]

If this is a new circuit with reduced neutral conductor size,its cocked
If this is a new circuit design,stick to conventional methods

You could put down the pen, paper or calculator and get a voltmeter out