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Cut-Out Fuse Question

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harv

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Newbie Question: I know theres loads of posts about this topic, but IM due to change a consumer unit for a customer and had told them to contact their supplier to get an isolator switch fitted(they are having a smart meter fitted as well) and the supplier has said thats the DNOs responsibility. the DNO have told the customer that they are happy for me to cut their seal, remove the fuse change the CU and then re-install the fuse, and that i don't need to re-seal the cut-out because they are having a the smart meter fitted within 28 days of me completing the job.

Any one come across a policy like this before? I know SSE (the DNO in question) can supply temporary seals to contractors, but i cant get hold of the depot to request some and the customer service centre couldn't do anything other than give me the phone number for the depot(which is what id been trying)

any advice would be great
 
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harv said:
thanks for reassuring me, i thought i was but as i said, just kept thinking about it and wether i was doing the right thing.
Click to expand...
Just always and I mean ALWAYS do an IR test on your CUs main switch (BEFORE installing any tails) so you know its good before putting that cut out fuse back in. NEVER rely on it being in the off position, because they can be faulty. And fitting a 100 amp cut out fuse back into the carrier with a dead short on the end of it isn't for the faint hearted. I spoke to a lad about his experience when in A&E once. He was still shaking after they had bandaged his hand up ?
 
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Also a good idea to wear a face visor and have at least leather riggers gloves or similar just in case.

I think it was Lucien who said he would line the fuse up then push it in smartly with the palm of his hand. The last thing you want to do if you have inserted on to a fault is, unfortunately, your natural reaction which is to pull it out again. Not gripping it avoids that reaction. Just let the fuse blow internally and have it quench the arc.

Brown trousers can be an asset as well.
 
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Just to add that obviously if you do this sort of thing regularly or are going to tackle systems where arc-flash is likely then you should get the proper PPE. Often gloves have a rubber insulating inner and a leather outer for mechanical protection and the arc-flash rating. For example:

Polyco RE0360 SuperGlove, Electricians Gloves, Yellow, Latex, Uncoated, Size 10 RE0360 | Cromwell Tools

Typically used for electrical maintenance, installations and wiring, these electrical insulating gloves are made from non-conductive natural rubber. The combination of high dielect RE0360 | Cromwell Tools
www.cromwell.co.uk www.cromwell.co.uk

RE-PRO Electricians Leather Protector Gauntlets | Cromwell Tools

Cromwell Tools - Experts in Hand Tools, Power Tools, Cutting Tools and PPE
www.cromwell.co.uk www.cromwell.co.uk

And for convenience kits of glove sets:
www.prosol.co.uk

Electrical Safety Glove Kit LARGE - Prosol

Large size Electrical Safety Glove Kit contains all the essential PPE when working on high voltage systems, supplied in a storage case.
www.prosol.co.uk

But you can get some insulating gloves that are usable without over-protectors for arc-flash and mechanical toughness, such as:
www.tester.co.uk

CATU CGM-00 Mechanical Insulated Gloves (500V) - Choice of Size

Insulated below 500V Work without leather overgloves Several sizes available
www.tester.co.uk www.tester.co.uk

Medium energy arc-flash masks are kind of expensive, for example:
www.safetygearstore.co.uk

ProGarm 2680 Class 2 Arc Flash Helmet

ProGarm 2680 Class 2 Arc Flash Helmet from only ÂŁ225.00 excl vat. Next day Delivery for in stock items. Size : One Size Type : Safety Helmets
www.safetygearstore.co.uk www.safetygearstore.co.uk

But for most folk not doing high energy systems (more so if fuse-protected so less let-through energy) you can get reasonably prices safety hat/visor such as this:

TC42ESBJ | Penta White Safety Helmet with Chin Strap, Adjustable | RS

uk.rs-online.com uk.rs-online.com

(also handy for other risks to your face/eyes such as drilling/cutting)
 
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Also to add don't were polyester/nylon, etc. but natrual fibers like cotton/wool/silk, and ideally a proper heat-resistant overall (again, you get arc-flash rated ones).

Synthetic material melt and sticks to your skin making any burn much harder for the medics to fix.
 
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[ElectriciansForums.net] Cut-Out Fuse Question

pc1966 said:
Just to add that obviously if you do this sort of thing regularly or are going to tackle systems where arc-flash is likely then you should get the proper PPE. Often gloves have a rubber insulating inner and a leather outer for mechanical protection and the arc-flash rating. For example:
Click to expand...
Off you goto work.
 
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pc1966 said:
Also to add don't were polyester/nylon, etc. but natrual fibers like cotton/wool/silk, and ideally a proper heat-resistant overall (again, you get arc-flash rated ones).

Synthetic material melt and sticks to your skin making any burn much harder for the medics to fix.
Click to expand...
thanks for your advice and the links to the safety gear.
 
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