60 amp main fuse

[ukracer]

dont do it to save a punter money. i get paid for an hour even if im there ten minutes and quite often you need the power on to test the wiring to see where the fault is . no diffrent to doing live cable jointing

It was tonight. Lol

 

[ukracer]

During a career break I trained as a smart meter installer. I did approximately 2000 installs

Never blew a main fuse but gave emotional and physical support to a few who did, usually a Henley block issue

They make quite the pop I am told...

I did not need either to be honest. I was more annoyed how stupid i was.

 

[ukracer]

OK, I'm nosey enough to ask. Why were you doing this?

It sounds like whatever you were working on was after the consumer unit, so I cant see any reason to be working on something that's live, or am I missing something?

It was well after the consumer unit. It was a single socket internal with a T to an outside waterproof socket.
I was only doing it as my wife was annoyed i had stopped working so I could have my grandson for a couple of hours. So as I was actually tidying in the corner of the front room i could hear the footy and keep wife happy by doing a job that had needed doing for ages but was escalated by the nextdoors son taking a car for MOT that was connected to a battery charger via my outdoor wall socket. WITHOUT taking said charger out of the socket.

I needed to expand the single socket (to a double) inside and replace the outside one. (again with a double outside)

Yes it was stupid, yes it was unsafe will i do it again NO.

 

[ukracer]

Brown trousers moment then, and you ruined the new pair of pliers

You can get 3 line "wagos" now - link

Those look quite useful. Just to clarify it was me slipping with pliers connecting live to earth momentarily not stick both neutral and live into one wago.

With what i did i am surprised the 30 amp trip actually tripped BUT also the 60 amp fuse blew. I would have expected the trip to be enough to protect the main fuse.

 

[ukracer]

They make quite the pop I am told...

I dont know. I was not working in the meyer box.

 

[Erie Fred]

Needing some arc flash headgear ?

 

[knighty]

What i did i am surprised the 30 amp trip actually tripped BUT also the 60 amp fuse blew. I would have expected the trip to be enough to protect the main fuse.

Guess you must have had 30amps+ load across other circuts?

 

[ukracer]

Guess you must have had 30amps+ load across other circuts?

But it was only on the 30 amp circut. It was at the socket where i was working.

 

[m_c]

Guess you must have had 30amps+ load across other circuts?

Nothing trips/blows instantly, and trip/blow times depends on overload and the type of rating, so depending on the type, a higher rated upstream fuse can blow before the downstream circuit breaker trips, or even trip/blow at the same time due to the delays involved.

 

[Onoff]

But it was only on the 30 amp circut. It was at the socket where i was working.

30A?

Is this a re-wireable fuse or circuit breaker?

 

[MattF]

I was more annoyed how stupid i was.

It came as a surprise?

 

[AKN]

With what i did i am surprised the 30 amp trip actually tripped BUT also the 60 amp fuse blew. I would have expected the trip to be enough to protect the main fuse.

Fuses get weaker with age, more so those subjected to inrush currents. I’ve had a motor fail 13A plug fuse intact but 50+ year old main fuse gone.

 

[ukracer]

30A?

Is this a re-wireable fuse or circuit breaker?

Circuit breaker.

 

[dobbslc]

Neighbour had a 60A main fuse go while she was out so I had a look and other than the house needing a full rewire I couldn't find anything to cause it. A few days later the central heating pump seized...

 

[minimutly]

Rather a very stupid old bloke. I purchased a brand new pair of VDE long nose pliers so i could put a live and a Neutral into wagos. (2 wagos i was not that stupid)

I unscrewed the live with a VDE screwdriver and using the long nose pliers i had the wago in another pair of pliers ready to put the live into it.
BUT and its why I have never worked on a live socket before i accidently touched the earth and the insulation on the live must have been compromised. It tripped the 30amp trip BUT it also took out the main fuse..

Seeing a big green blob before your eyes for a while too, no doubt...