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Writer's pictureAndrew Corkill

When do you contact the DNO with cut out problems?

As an electrician you come across lots of different types of installations but what do you do when you look at the cut out and you see it is damaged? If you can smell burning make sure you have turned off the Consumer unit to make sure there is no load on it. Then call the DNO (electricity board/supplier) for your area.

Because the cutout is the property of the network energy operator they have a duty to look after it. So if you do see a problem with the cutout and could danger to life or property never hesitate to call.


This one i found when i was changing an Consumer unit. The under stairs cupboard where this sits normally has the children's toys in it. Touch that copper lug and you may not see tomorrow!


The various suppliers around the country are shown on this map.



You can dial 105 and it will take you to your dedicated DNO. But the below are all the contact details and web address for your area.


SCOTTISH AND SOUTHERN ELECTRICITY NETWORKS

  • 0800 072 72 82 (Central Southern England) 0800 300 999 (Northern Scotland)

  • www.ssen.co.uk


SP ENERGY NETWORKS

  • 0800 001 5400 (Cheshire, Merseyside, North Wales & North Shropshire) 0800 092 9290 (Central & Southern Scotland)

  • www.spenergynetworks.co.uk

ELECTRICITY NORTH WEST

  • 0800 195 4141 (North West England)

  • www.enwl.co.uk


NORTHERN POWERGRID

  • 0800 66 88 77 (North East & North Yorkshire) 0800 375 675 (Yorkshire & Northern Lincolnshire)

  • www.northernpowergrid.com


UK POWER NETWORKS


WESTERN POWER DISTRIBUTION

  • 0800 6783 105 (the Midlands, South West England and South Wales)

  • www.westernpower.co.uk

When you do call they will ask for various information like name, address, phone number etc. But they will also ask for a code what describes what the problem may be with the cut out.


They are called A,B and C codes A being the most serious and normally they will be out with you within 3 hours regardless of the time of day. B and C codes are less serious and you will find they will come out when they can.


The codes you should quote to them are as follows.


A01 DB equipment operating hot (signs of over heating)

A03 Defective/weakened fuse carrier

A04 Physical damage to DB equipment requiring immediate attention

A05 Sign of DB equipment burning, smoking or arching

A07 Exposed live conductor

A10 DB earthing issue at existing installation which presents an immediate risk to customer/property

A12 damaged asbestos component in DB equipment

A14 Polarity identified as incorrect at DB equipment

A15 Immediate risk to the public or customer due to current service position location

A17 live unearthed DB metal-encased equipment

A19 Surface voltage found on plastic cut out


B01 Fuse carrier welded in to cutout base

B02 Cutout loose

B03 Damaged/missing phase barrier in DB equipment

B04 Damaged/broken cutout terminal including missing terminal screws

B05 Non-withdrawable fuse by design

B07 DB equipment issue preventing installation/ replacement of meter tails

B08 Unhinged metal cutout cover over un insulated conductor

B10 Unearthed DB metal encased equipment

B11 Cutout with fused neutral

B12 DB owned CT metering equipment issue


C02 Signs of bitumen compound leaking

C03 Lower rating fuse or cut out (less than 60A)

C06 Metal encased cut out

C07 DB equipment unable to be securely sealed

C11 Asbestos component identified in DB equipment

C14 Fed from distribution board - Local/remote from meter

C15 DB cable terminating into DB equipment is VIR/MICC

C16 DB equipment is mounted on asbestos board

C17 Black plastic cutout

C18 rewirable cutout fuse

C19 Single insulated DB conductor (phase or non-PME neutral)

C20 Missing combined neutral-earth cover on DB equipment


Of course if you see damaged network cables like this one i found a few days back where it looks like a mouse was getting hungry, never hesitate to call the DNO right away.






The shroud i fitted to it was to make it safe before the DNO come.




















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