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Service cable and cut out too hot.

broadgage
I was called by a local hospice to investigate "overheating" and found the DNO service cable and cut out to be alarmingly hot, I would estimate the surface temperature of the service cable to be at least 60 degrees. Definite smell of hot PVC.

Enquires suggested that the supply was originally 60 amps, single phase and was upgraded to 100 amps by fitting a larger fuse.


Measured load was just just under 100 amps, it probably exceeded 100 amps if anyone used a kettle.Service cable looks like only about 10mm. Voltage is rather low at 221 volts, but just within tolerance.


Is it worth calling the DNO, or will they simply say "supply working, do not worry" I suspect that the service cable is very undersized, but am aware that DNOs work to different rules.


I have moved combustibles away from the cable and advised reducing the load a bit,


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  • 0
    Well it sounds like the supply is in need of reinforcement, and if the DNO want to charge or not, it needs putting on everyone's radar, as it were. Unless there is a lot of temporary load because of the weather, it is unlikely to go away, loads tend to creep up, not down...

    " Hospice" sounds like the sort of place that might be more upset than normal if it all goes dark.

    Unless there is obvious scope for load reduction, it will be a DNO call, and its a less stressful one to make if an initial query is made now, rather than waiting until  power goes off  on a bank holiday at lunch time.
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  • 0
    Well it sounds like the supply is in need of reinforcement, and if the DNO want to charge or not, it needs putting on everyone's radar, as it were. Unless there is a lot of temporary load because of the weather, it is unlikely to go away, loads tend to creep up, not down...

    " Hospice" sounds like the sort of place that might be more upset than normal if it all goes dark.

    Unless there is obvious scope for load reduction, it will be a DNO call, and its a less stressful one to make if an initial query is made now, rather than waiting until  power goes off  on a bank holiday at lunch time.
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