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 ?
- Thread starter The apprentice
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You'll find out when he does it. Which one do you think.
He shouldn’t be pulling either, unless he has permission from the supplier.
(Or the seal fairies are smiling on him)
And if he’s crabbit when you ask him questions, then ask to work with someone who does want to teach you things.
(Or the seal fairies are smiling on him)
And if he’s crabbit when you ask him questions, then ask to work with someone who does want to teach you things.
he will usually contact the supplier and asks for permission just curious s what fuse he will pull
You can trace the cable back to the fuse, the other fuse appears to supply another property or something else.
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 (?).
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 (?).
Sorry, but what would be the point of that?
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.
If your boss is advising you on how to pull the correct fuse then I suggest you take a very long step backwards.
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".
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".
dno put an isolator on for us in the end mate thank you tho
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