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Waveform/wavecon cable sizing

Will Elec

Just had a quote in from Western Power for a new 100a 3 phase supply. There is approximately 100m between the pole mounted transformer and the cut out and the DNO has specified 185mm wavecon cable.. this seems like an overkill to me, the pole transformer is 50Kva and it seems like 95mm would be more appropriate!  Not sure what voltage drop on waveform cable is like but compared with regular SWA 95mm still seems plenty big enough.. Thoughts on this would be appreciated! Thanks




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    Thanks for that. As you say I had a feeling it would be due to voltage drop. The 50kva transformer is actually replacing a small 15kva single phase one and the cable will only ever supply one customer. Although a 50kva transformer is still being used for a 72kva 100a supply so I guess the DNOs don't mind a bit of overload!
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    Thanks for that. As you say I had a feeling it would be due to voltage drop. The 50kva transformer is actually replacing a small 15kva single phase one and the cable will only ever supply one customer. Although a 50kva transformer is still being used for a 72kva 100a supply so I guess the DNOs don't mind a bit of overload!
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