Grenfell tower electrical "expert"

johnduffell · Nov 29, 2018

For some reason, the grenfell tower inquiry has got an american electrical expert to comment on the electrical cause of the fire. And he doesn't seem to know a lot about BS7671 etc,

Firstly he thinks you can't trip an RCD after the MCB has tripped of a given circuit (presumably they have DP MCBs over there?), and secondly he thinks it's very improbable to trip an RCD and MCB simultaneously. Therefore he thinks most likely this happened in the first few minutes of the fire:

[ElectriciansForums.net] Grenfell tower electrical "expert"

https://www.grenfelltowerinquiry.org.uk/file/2822/download?token=crUe0vAo

He also seems to think a more "violent" short circuit would be more likely to start a fire because the MCB wouldn't trip quick enough. And he uses the total clearance time (rather than pre-arc time) to decide whether there's discrimination between a B32 and a 13A fuse.

They could have got any british electrician in and they'd have done a better job than this guy!

PEG · Nov 29, 2018

Maybe the British experts guessed,there will be no thanks or glory,on this journey.
Sadly,as we have seen in the past,many,many times,it will be pingpong blame games,with no single entity,genuinely concerned with only the truth.

My own view,putting the obvious tragedy and sadness aside,is that it will be stretched out,for as long as possible,to enable the multitude of identical or similar situations,and therefore risks,to be part solved by natural replacement or regulation change refurb.

Anybody who thinks this complicated equation,will end with a definitive value for"x".....is going to be disappointed.

Squid · Nov 29, 2018

Sad really how this will drag on and on and no one will be to blame, I lived not to far from the Tower for about 10 years and used to drink in the Pig and Whistle or Garden Bar/Pub, one of the victims used to pop in from time to time and we'd have a chat, I recognised him from a photo in the papers and he was a really nice guy.

RIP

dmxtothemax · Nov 29, 2018

Being so close to home , i would imagine the authorities want to keep this enquiry at arms length,that way no one can claim bias or interferience.

TJ Anderson · Nov 29, 2018

johnduffell said:
They could have got any british electrician in and they'd have done a better job than this guy!

You'd like to think they would, but probably not. Most can't even test and verify a Zs, let alone use Current Curve graphs to verify discrimination of devices

snowhead · Nov 29, 2018

The cause of the fire is irrelevant, although it's required for completeness in the investigation.

A child with a match could have been the start of a fire in a single flat but the cause of the fire in the whole block is the cladding.

If it hadn't have been the Hotpoint fridge freezer in flat 16 it would have been something else in a different flat at a later date.

TJ Anderson · Nov 29, 2018

snowhead said:
The cause of the fire is irrelevant, although it's required for completeness in the investigation.

A child with a match could have been the start of a fire in a single flat but the cause of the fire in the whole block is the cladding.

If it hadn't have been the Hotpoint fridge freezer in flat 16 it would have been something else in a different flat at a later date.

Totally agree. It was just waiting to happen.

Strima · Nov 29, 2018

How many people are now wondering how good their through crimps are that are buried in walls?

littlespark · Nov 29, 2018

Standby for an urgent Hotpoint safety recall on their fridge freezers.

I'm sure every other make and model of fridge freezer (and other appliances) have absolutely perfectly crimped wires

StephenRowley · Nov 29, 2018

snowhead said:
If it hadn't have been the Hotpoint fridge freezer in flat 16 it would have been something else in a different flat at a later date.

A tower block in Leeds recently had major flat fire. Flat was gutted fire didn't spread because it hadn't been covered in plastic.

Most likely becuase the surrounding area was full of yuppies who don't like looking at ugly coucil blocks and wanted a cheap way of cover them up.

dmxtothemax · Nov 30, 2018

With that many people in a small area, and most with little or no money, then there is bound to be questionable electricals involved.
But good design of the distribution systems can keep this under control mostly. But the cladding was unstopable. fate sealed.

oracle · Nov 30, 2018

seoziw22 said:
The devastating Grenfell Tower inferno was most likely started by overheated wiring within a fridge freezer, an expert has said.

Dr John Duncan Glover concluded last year's fire probably began in the Hotpoint FF175BP in the kitchen of Flat 16.

Hotpoint? Very unfortunate choice of name.

Squid · Nov 30, 2018

StephenRowley said:
A tower block in Leeds recently had major flat fire. Flat was gutted fire didn't spread because it hadn't been covered in plastic.

Most likely becuase the surrounding area was full of yuppies who don't like looking at ugly coucil blocks and wanted a cheap way of cover them up.

I lived in the area, Grenfell is in the middle of a council estate.

marconi · Nov 30, 2018

LAptop playing up

marconi · Nov 30, 2018

duplicate

Grenfell tower electrical "expert"

johnduffell

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PEG

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Squid

dmxtothemax

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TJ Anderson

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snowhead

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TJ Anderson

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Strima

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littlespark

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StephenRowley

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dmxtothemax

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oracle

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Squid

marconi

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marconi

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