Fuse to isolator or isolator to fuse?

[Lukusss]

I'm at a care home and a debate has come up in the plant room. One guy is arguing you take your tails from the meter to an isolator then to a fuse then to your board. The other reckons it should be fuse then isolator then board. Any right or wrong?

 

[loop3]

? The fuse could act as the isolation point. Could even use a fused isolator.

 

[loop3]

I struggling to see a benefit either way.

 

[Farmelectrics]

your both wrong tails go from your meter to a cut out (isolator) then to your cu

 

[44ALLAN]

I'm at a care home and a debate has come up in the plant room. One guy is arguing you take your tails from the meter to an isolator then to a fuse then to your board. The other reckons it should be fuse then isolator then board. Any right or wrong?

The fuses before the meter will be protecting your tails so why would you need another fuse?
The isolator would then be there to 'isolate' the next circuits on the tails whether it be consumer unit or distribution board which would then be fused accordingly to the circuits on them.

 

[polo1]

your both wrong tails go from your meter to a cut out (isolator) then to your cu

I'm with him^^^^^^^^^!

 

[Lukusss]

Sorry I should've been more specific, it's a Wylex fused isolator, basically a fuse on the left of the unit with a factory fitted link to an isolation switch on the right of the unit. This is feeding a sub main on the other side of the building. The guy has connected tails to the fuse and came out with his armoured from the isolator. And guy number 2 who's old, set in his ways and can't be told different has said it should be: tails to isolator, through to fuse then out with armoured from the fuse side of the unit. In through the top out through the bottom 3 of us have argued, fusing it before isolation.

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Sorry I should've been more specific, it's a Wylex fused isolator, basically a fuse on the left of the unit with a factory fitted link to an isolation switch on the right of the unit. This is feeding a sub main on the other side of the building. The guy has connected tails to the fuse and came out with his armoured from the isolator. And guy number 2 who's old, set in his ways and can't be told different has said it should be: tails to isolator, through to fuse then out with armoured from the fuse side of the unit. In through the top out through the bottom 3 of us have argued, fusing it before isolation.

 

[44ALLAN]

Main cable comes in to Isolator then linked from Isolator to fuses.
Circuit being protected by fuses is then taken from there.
All the 3 phase Isolators I use are like that anyway.

 

[Engineer54]

Sorry I should've been more specific, it's a Wylex fused isolator, basically a fuse on the left of the unit with a factory fitted link to an isolation switch on the right of the unit. This is feeding a sub main on the other side of the building. The guy has connected tails to the fuse and came out with his armoured from the isolator. And guy number 2 who's old, set in his ways and can't be told different has said it should be: tails to isolator, through to fuse then out with armoured from the fuse side of the unit. In through the top out through the bottom 3 of us have argued, fusing it before isolation.

Then the old guy set in his way's is correct, and good for him standing up to those of you that were WRONG!!
And if you think about it for a moment or two, you will understand Why he is correct and you three are wrong!!

 

[MDJ]

go to main switch first then the fuse, I assume you mean you have a switch fuse and are wondering whether the tails should connect into the incommer rather than into the top of the fuse, and assume there is already a link from the bottom of the incommer to the fuse as factory fitted?

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oh god beat to it again whilst typing haha

 

[44ALLAN]

Ahhhh............another happy 'old and set in his ways' chap here lol

 

[Engineer54]

Ahhhh............another happy 'old and set in his ways' chap here lol

You better believe it!! lol!!:8:

 

[44ALLAN]

You better believe it!! lol!!:8:

Hope those guys realise one side of their fuse is still gonna be live with the Isolator switched off !!

Or both sides if it hasn't blown,of course

 

[Engineer54]

Hope those guys realise one side of their fuse is still gonna be live with the Isolator switched off !!

Or both sides if it hasn't blown,of course

Exactly!! ...Which is what i was talking about when i advised him to take time and think about why the old boy was correct... lol!!

 

[Lukusss]

Then the old guy set in his way's is correct, and good for him standing up to those of you that were WRONG!!
And if you think about it for a moment or two, you will understand Why he is correct and you three are wrong!!

Yeah I get the point, I was on the fence but if you just think of it as a db then you've got your answer. Cheers people

 

[SAILOR48]

Yeah I get the point, I was on the fence but if you just think of it as a db then you've got your answer. Cheers people

I am sorry. I find it amazing, that any one working on electrics, would have to ask such a question.
What’s all the training for?

 

[Silly Sausage]

I am sorry. I find it amazing, that any one working on electrics, would have to ask such a question.
What’s all the training for?

To make all the training providers wealthy(?)

 

[Knobhead]

You don't get much learning per £ when you have to spread it over 17 days.

 

[Knobhead]

Now the Question!

Is it a fused switch or a switched fuse?

 

[SAILOR48]

To make all the training providers wealthy(?)

Ha Ha yes that as well but off topic :0)
I am one of the old bar stewards that people on here go on about, I still after 40 years still have a lot to learn.
But a lot of questions on here are very basic to the trade and if asked by people training and under supervision are ok, you don’t ask you don’t learn.
But if you are supposed to be competent and working on your own you should know these basic things.

 

[Silly Sausage]

You don't get much learning per £ when you have to spread it over 17 days.

Oh, I don't know, you can learn a hell of a lot in 408 hours, trouble is staying awake that long.