Bang!

[scammell man]

You get 3 phase in houses. If you can't work on 3 phase you aren't competent. Period.

 

[m top]

An example: full test IR Line neutral
periodic or fault finding this is normally skipped because you don't know what's out there or you can't be bothered to remove several scores of bulbs.

Thanks on your level now lol totally misinterpreted your first post mate

 

[guest119]

Now we have the Electrical Trainee brigade arguing amongst themselves about competency, what next!

Boydy

 

[sparks1234]

So, is there anyone on here that has never ever had a belt?

 

[telectrix]

i was once thrown across the kitchen, but i divorced her soon after.

 

[Hawkmoon]

Obviously it is a lesson learnt for me and I shall be doing as Tel suggested from now on. Thanks to clive P for an honest reply.

That's good because Full safe isolation procedure is the absolute minimum you should do before touching anything...

...coupled with the knowledge and experience to know that sometimes even this will not fully eliminate risk (timed supplies/borrowed neutrals etc).

 

[MDJ]

I must be the only guy here with a MFT, when I stick mine on to the IR test scale it won't let me press the button if the circuit is live, so either OP didn't have the right equipment or his was broken. I understand what he said about what happened, however when he put his meggar across the live cables to test for continuity why didn't his tester let him know not to test due to a live circuit.

 

[Hawkmoon]

I must be the only guy here with a MFT, when I stick mine on to the IR test scale it won't let me press the button if the circuit is live, so either OP didn't have the right equipment or his was broken. I understand what he said about what happened, however when he put his meggar across the live cables to test for continuity why didn't his tester let him know not to test due to a live circuit.

Think he was putting in a temp link to join L-N for a combined IR test to earth (if I read OP correctly)

 

[scammell man]

Hence my comment re not doing live neutral test. oP States he was putting a jump lead on, ie shorting live and neural of a live supply. Tester on PFC would be more appropriate!

 

[shanky887614]

after safe isolation if your not sure on what the cable is etc then don't touch the copper.

simples (obviously the guy got caught out because there was no warning labels etc stating dual supply)

use vde pliers/long nose and you cant go far wrong. no need to touch the copper imho

 

[MDJ]

Think he was putting in a temp link to join L-N for a combined IR test to earth (if I read OP correctly)

Oh right, I usually meggar between cores first before inserting a link just to see if everything is okay, if he would have done that then the tester would have shown a live circuit and the bang would have never occured, anyhow I am done here, you guys are doing a good job by yourselves lol.

 

[gnuuser]

Hi,

To be honest, I think most of us will have carried out isolations this way.
Turn off all the MCB'S , RCD's and main switch and test. I can't believe that EVERYBODY checks every single circuit on every isolation. For my part I think the OP was getting a bit of a slating; when it's not really due. Good point is, it has reminded us all that you can't take everything for granted.

Regards.

and why not? I do!
(went to change a 250 hp 3 phase motor one time and identified and locked out the disconnect, only to find out it was fed from two different panels after metering the leads)
have been careful to check everything since then!

 

[shanky887614]

Oh right, I usually meggar between cores first before inserting a link just to see if everything is okay, if he would have done that then the tester would have shown a live circuit and the bang would have never occured, anyhow I am done here, you guys are doing a good job by yourselves lol.

there is an option on megger and fluke to ir at 230v

why no one uses it i will never know

 

[ifindoubtdont]

MDJ that's called experience and if all who read this thread can learn and take away a little bit more knowledge for next time, then that's what this forum is all about.

 

[Guest55]

all this talk of safe isolation makes me chuckle when i remember back to a hotel mains change a few years ago.....

the elecky cupboard was a mess , it was all coming out , db's , tails en all.

so with no messing about i pull the dno fuses and i give everything a waft over with my fluke stick , which beeped ??....
how could this be ???

a 16mm earth was live !!!!
with the dno fuses out !!!
and all tails removed !!!

after 10mins of head scratching , i'd worked out that this pvc single was feeding the electric heaters CU and had entered through the rear of the backboard , into the bottom of the cut-out and straight into the incoming terminals !

nice lol.

 

[itselectric]

I had to rewire a ward in a local hospital, our first job was to isolate all circuits and remove wiring before new install. The hospital engineer was on site and confirmed the wards circuits were dead. We worked through the ward one room at a time and when it came to the sluice there was a pyro feeding a bedpan washer, so I chopped through it, bearing in mind we had been on the job for over 4 hours and worked without incident. I cut the pyro with my bolster chisel and it set of crackling like a sparkler for the 10 metres I could see it until it disappeared into the roof space. Lucky for me the fuse must have blown at that point. After checking for possible fire, I contacted the engineer who sent one of his guys up, and he located the circuit fuse, it was down a corridor about 20m away from the ward.
What made it worse the cable was 1.5mm 2core on a 50amp fuse.
All because I took someone else's word that all circuits were dead.
This happened in the 1970's and since then I have taken no-ones word that a circuit was isolated.

 

[SPARTYKUS]

Love the sparkler description itselectric.

- - - Updated - - -

So even pyro has its limits!

 

[itselectric]

Love the sparkler description itselectric.

- - - Updated - - -

So even pyro has its limits!

Change of underwear was almost required that day. I thought I was going to have a bit of explaining to do to the fire chief.

 

[MDJ]

Change of underwear was almost required that day. I thought I was going to have a bit of explaining to do to the fire chief.

make sure you install a fan in your toilet then, so if it ever happens again your visitors won't know you did it lol

 

[Guest55]

make sure you install a fan in your toilet then, so if it ever happens again your visitors won't know you did it lol

dont be ridiculous , you cant fit a toilet fan !!!!!!!!!!!



....theres no shower circuit to connect it to. :bucktooth: