P
pencilpusher
Hi all
This has got me thinking. I am designing a circuit using 3 core 2.5mm SWA and using table 11 in the OSG on page 182.
With an R1 of 2.5mm and the same for R2 I know what the milli ohms per metre is. That's all well and good but I also know from experience that when uisng the armour as an additional CPC (so to speak) that the R2 resistance will be much lower due to the additional conductor csa in circuit. However, in order to design my circuit more accurately, how do I work out the actual R1+R2 for the SWA used?
Cheers for any help on this.
PP
This has got me thinking. I am designing a circuit using 3 core 2.5mm SWA and using table 11 in the OSG on page 182.
With an R1 of 2.5mm and the same for R2 I know what the milli ohms per metre is. That's all well and good but I also know from experience that when uisng the armour as an additional CPC (so to speak) that the R2 resistance will be much lower due to the additional conductor csa in circuit. However, in order to design my circuit more accurately, how do I work out the actual R1+R2 for the SWA used?
Cheers for any help on this.
PP