anyone who r familiar with calculating the voltage drop ? i am refering to the British Standard (BS), particularly the section where the voltage drop table tabulates..in that section there are a few convention stating different voltage drop (mV/A/m). for example, for a copper cable at 25sqmm at PVC/PVC on tray, there are V drop at r=1.75mV/A/m , x=0.20mV/A/m and z=1.75mV/A/m. my question is what does r, x and z refers to ? is it length, cross section area, diameter or etc ? thx.
voltage drop
Re: voltage drop
