Fuses and tails.

[The apprentice]

hi there doing some work with my gaffer just for my own mind a 60 amp fuse at the main cut out with 16mm2 tails well i assume they will be what size of main switch for the consumer unit ? could 100A main switch be put on that ?

 

[littlespark]

I assume the job is to replace that consumer unit, because as it stands, it’s rough.

If you’re upgrading the tails, then the neutral will have to be disconnected. Otherwise, no... pulling the fuse will sufficiently isolate.
Just pull the fuse that’s going through the meter.
The other fuse does appear to supply a cable that goes straight up- possibly to an upstairs flat (?).

 

[DPG]

What brand board are you putting in out of interest? And are you using RCBOs?

 

[Taylortwocities]

I would use 80 amp

Sorry, but what would be the point of that?

 

[The apprentice]

I assume the job is to replace that consumer unit, because as it stands, it’s rough.

If you’re upgrading the tails, then the neutral will have to be disconnected. Otherwise, no... pulling the fuse will sufficiently isolate.
Just pull the fuse that’s going through the meter.
The other fuse does appear to supply a cable that goes straight up- possibly to an upstairs flat (?).

no upstairs might be next door tho and so he won’t need to disconnect the neutral it’s safe him just pulling the live fuse

 

[DPG]

no upstairs might be next door tho and so he won’t need to disconnect the neutral it’s safe him just pulling the live fuse

You are worrying too much. He is the guy who is on site and can see everything. Watch what he does, and ask questions. If he doesn't want to reply then go elsewhere for your training.

Just one other question - is it actually you doing the job? No offence intended, but your questions come across a bit odd in their manner.

 

[The apprentice]

You are worrying too much. He is the guy who is on site and can see everything. Watch what he does, and ask questions. If he doesn't want to reply then go elsewhere for your training.

Just one other question - is it actually you doing the job? No offence intended, but your questions come across a bit odd in their manner.

yeah but he’s going to supervise me just little bit knowledge before i do is great he can see i do things at home a iam keen to learn unlike some apprentices this site is great for stuff like that and i do appreciate all the support thanks mate

 

[Kidsolo]

is it actually you doing the job?

This sounds like the correct answer

 

[westward10]

If your boss is advising you on how to pull the correct fuse then I suggest you take a very long step backwards.

 

[Simon47]

Apart from the fact that you are not allowed to interfere with the DNO's equipment, do you have the correct PPE for pulling a main fuse ?
As a MINIMUM you should be wearing : full face mask to protect your face against showers of molten metal droplets, long (covering your lower arms) insulating gloves, and suitably fire resistant/retardant clothing covering everything else. Is that overkill for just pulling a fuse ? Well for 99.99...% of cases - yes. But it's the 0.0..1% where the service head is old/faulty/poor design/whatever and it goes BANG that you are dealing with. It's no good thinking about putting on PPE after you've had a face full of molten copper, and widespread electrical burns.
And yes, 240V is more than enough to sustain a considerable arc until (hopefully) the 300A or larger fuses blow at the substation.
See Donnie's Accident - http://www.donniesaccident.com if you still need any persuasion that there are risks. OK, his was a different setting, but there is enough energy in a domestic supply to cause similar injuries.
And also see Safety Poems by Don Merrell - SafetyRisk.net - https://safetyrisk.net/workplace-safety-poems/safety-poems-by-don-merrell/ and in particular, "I Could Have Saved A Life That Day".

 

[The apprentice]

If your boss is advising you on how to pull the correct fuse then I suggest you take a very long step backwards.

dno put an isolator on for us in the end mate thank you tho