burned mice and 3 phases dead

[amlu]

had a last minute call out to a shop today. all electrics dead, checked db first, found a fried mouse between bus bars.

no power coming into the db, checked on the meter, nothing, checked incomer fuses (100a) they good, no power going to the fuses. advised them to call to DNO.

they said there was some burning smell from suspended ceiling before (theres lots of fluorescent lights in it)
install is a proper proper cowboy mess, did not want to bother sorting it out and walked off , just wondering what happened, fault on the lights should knock mcb off, short circuit by mouse should blow incomer fuse?

 

[Brightspark2]

That is a mess...

 

[dan86]

a right mess before the mouse even got there

 

[amlu]

yeah, a right mess...

 

[SirKit Breaker]

Have you checked the tables in the BGB to see what the disconnection time is where a mouse is used as the protective device? does it have a BS number?:coolgleamA:

 

[dan86]

depends how fat the mouse is surely?

 

[SirKit Breaker]

And of course the type of mouse, check the relevant BS number.

 

[Gage]

Fuse rating might be lower at the substation and blown, obviously wouldn't be right but a possibility.

 

[Geordie Spark]

Three burned mice / Three phases dead .............. sounds like a nursery rhyme to me.

 

[trev]

depends how fat the mouse is surely?

Well the one in the picture looks like a 6 amper, I've seen some big uns that would take a lot more.

 

[Silly Sausage]

Have you checked the tables in the BGB to see what the disconnection time is where a mouse is used as the protective device? does it have a BS number?:coolgleamA:

It's tattooed under their head fur.

 

[BrianDB9]

Guess that was a final circuit ?

 

[HandySparks]

And of course the type of mouse, check the relevant BS number.

That'll be the Breed Standard then:
The National Mouse Club | Membership of the NMC :biggrin:

 

[Knobhead]

Had a mouse register 20MVA as a transient fault. Poor little sod had got in to an 11KV bus-bar spout. It got its picture in the Electrical Review 30+ years back. I wasn’t too happy rebuilding the switchgear. Even found its nest and babies on top of one of the OCB tanks.

 

[Des 56]

found a fried mouse between bus bars.

That's one hell of a way to be "taking the Mickey"

 

[Silly Sausage]

Great, now that hairy barstard has gone...

 

[Gage]

found a fried mouse between bus bars.

That's one hell of a way to be "taking the Mickey"

Breaking news

 

[Geordie Spark]

Great, now that hairy barstard has gone...

How did ye get that piccie of Wor Lass?? :32:

 

[Engineer54]

found a fried mouse between bus bars.

That's one hell of a way to be "taking the Mickey"

Perhaps that was Mickey's idea of taking Mini on a Hot Date!! lol!!

 

[Gage]

How did ye get that piccie of Wor Lass?? :32:

:happybday: