Changeing CCU and removing main head fuse

[justjust1]

Hi all,

I am just finishing my Level 3 City and Guilds level 3.

I am going to replace an old re-wire-able fuse type CCU with a dual RCD CCU. When replacing a CCU in the past i have just removed the main head fuse to disconnect the supply going to the CCU.

But someone at my collage has mentioned that you are supposed to contact the supplier and they will send someone out to do it? This seems a bit pointless as they will then have to re-connect after i have finished?

Can someone clarify?

Also if i can just remove the main head fuse, where would i get the wire which goes in to stop people removing the fuse? And what is it called?

Thanks

Justjust1

 

[cbw]

Oh Blimey!

Time I went to bed....Far to serious for me.

Your not wrong! But its been done to death and next time you drive at 31mph in a 30 I too will find you an abhorrent criminal whom I wish to have nothing further to do with.

 

[Paul.M]

I read that a bloke got a shock from an exposed cable in his garage. Few days later had bad chest pains. Went docs couldnt find anything wrong after tests. When he told docs of shock they told him it was related to the shock! Don't know how true that was

After a shock some hospitals put a mobile monitoring device on you for 24 hours to make sure that your heart rhythm is still in time. Electric shock can kill hours after the incident. Irregular heart beat can be rectified by surgeons stopping your heart and then restarting it with controlled electric shock across your chest and they use 100 mA - 500 mA.

 

[robsparky1975]

OOPs lights out in my cell in 5 mins,night all lol

 

[justjust1]

justjust1,
You stated earlier in the thread that you were competent to remove the DNO fuse as I read you post.
Which DNO or electricity provider trained you in this?
Then you go on to say that you don't have the appropriate PPE.
This does not compute!
Please explain if you have the PPE or not and where you did your National Grid training?

I have my level 2 city and guilds and am just about to finish my level 3. Was not aware that i had to go on national grid training just to pull a main fuse! Just asking for advise! Also i can be competent and not have the specific training you are referring too!

 

[justjust1]

OK however, it is the truth.
Sorry I have no time for law breakers end of story.
They are undermining the trade in all areas.
The sooner this stops the better it will be for those who stick by the rules.
All this nonsense about you can't get e DNO to attend a dangerous situation is rubbish.
It is easy to do, and if they don't then they are in heap big doo doos.
If you are pulling DNO fuses without written permission of the DNO then you are a criminal Sir and I want no more to do with you.
This attitude is abhorrent.
You all cry out about the uncertified sparks taking work away, however, many seem willing to break the law to suit themselves.
DNO's are NOT above the law and are easy to work with.
You just need to understand how.
The way this forum is going I'm not sure I want to be associated with such a bunch of criminals as that is what it seems to me.

Thats just stupid if its illegal, but if that is the case then guess i better do some investigation before i do anymore!

 

[WayneL]

JustJust,

Where are you doing your training - and is this the only electrical training that you have received?

I ask this for a couple of reasons:

You are level 2 qualified (you haven't finished level 3), yet you think you are 'competent' to pull the DNO fuse and . indeed, to replace CUs.
(CU replacement is notifiable work, by the way - are you Part P Registered)
Do you know how to fully inspect and test a replaced CU??

Then there's this corker:

Correct me if im wrong but I thought it was the amps that kill? If so, how could he die from a 3 amp supply?

You don't know how much current would be required to kill you - yet you think it's okay to poke around in a 'live' CU?

So, OK why then, when i accidentally touched the bus bar in my CU did i not die? Not protected by an RCD and a potential of 100A?

What is 'a potential of 100A', by the way.

The mind boggles.

Who, pray tell, is teaching you?

And, honestly, do you really think you're competent to be playing around with peoples electrical supplies??

 

[imago]

Harsh, but fair comment.

 

[mattmoo1974]

You cant buy the tags on ebay!

 

[justjust1]

@ WayneL

Competent, yes! Experienced, no!

This is the reason why i have been asking questions on here. You have to start somewhere. Your comments are fair and true but slightly harsh.
I have done 2 CCUs for friends and family as a training exercise for myself and yes i am competent to test and inspect thanks.

However why this is in bold, i have no clue!

 

[justjust1]

You cant buy the tags on ebay!

FLAG FERRULES SECURITY SEALS/ELECTRIC METER/KWH/TAGS on eBay (end time 22-Jun-11 17:09:53 BST)

 

[Electricalserv]

Don't worry mate, the forums great for advice and stuff you will always get a selected few who know the in's and out's and will mock you, just try to ignore those. Guys like telectrix and IQ are the best to ask and speak to because they always answer you questions no matter how small, business, wiring testing and it's always spot on advice.

 

[mattmoo1974]

Just is was said in Jest as in they do

 

[justjust1]

Just is was said in Jest as in they do

Ahhhh! Sorry my sense of humor has been removed by some of the previous posts!

 

[richy3333]

The removal of cut-outs I guess has been discussed to death time and time again and probably will go on and on. The system could be improved with training and PPE to allow sparks to do this themselves. To be honest I've seen my DNO remove the fuse then put on their PPE to work on the live cables?! but then again it's their life. They don't mind me removing the seals and they then re-seal when they read the meter. justjust1 - the DNO around here have crimping tools that have a seal number on them and this is crimped into the seal when it is formed - they can then identify which operative did the work. I presume this happens in other parts of the country too?

@ WayneL

C
I have done 2 CCUs for friends and family as a training exercise for myself and yes i am competent to test and inspect thanks.

As you are in England, what are you doing about notifying the work under Part P, as you have done 2 CCU changes already?

And, not meaning to sound harsh (we all have to learn somewhere) if you have done 2 CCU changes how did you correlate your RCD test results and know they were OK if you didn't know the level of current that could kill when signing the certificate?

 

[Electricalserv]

And, not meaning to sound harsh (we all have to learn somewhere) if you have done 2 CCU changes how did you correlate your RCD test results and know they were OK if you didn't know the level of current that could kill when signing the certificate?

I don't think thats explained well at all in our training. We are just told 10ma 30ma 100ma rcd's what disconnection time etc. You only really pick stuff up like that if you get into your text books like scaddens.