Ayupmeducks 1,730 Posted December 25, 2017 Report Share Posted December 25, 2017 Poor maintenance at the Substations would be the likely cause Steve, dirty insulators breaking down, it would be unusual for cables to fail, not impossible, just unusual. Each subcircuit from the main Subs usually has a larger capacity than required cable, as the are only carrying 440v 3 phase they'd be rated 660 volts, adequate for both domestic and industrial use. Around here it's usually a squirrel who is the culprit, but drivers texting can cause long outages when the run off the road and take a pole down. Quote Link to post Share on other sites
Brew 5,409 Posted December 25, 2017 Report Share Posted December 25, 2017 It's actually 50/50 to be a cable fault or a fuse tripped at the sub. On the LV subs there are no exposed insulators (unlike PMT's). In the 'Medders' although many have been replaced there are old 'paper/lead' cables still in service and will be for some time to come. They are much more susceptible to faults due to wear, tear and age related problems. Quote Link to post Share on other sites
loppylugs 8,427 Posted December 26, 2017 Report Share Posted December 26, 2017 'Bout like me then! Quote Link to post Share on other sites
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