3 Core and Earth plus a FCU help!!

[DIYBlues]

Hi Guys

I need to add a 3A FCU to 3 core and earth cable for a timed extraction fan (prior to the TP switch), how is this achieved with only L N and E connections on the FCU?

Regards
DIYBlues

 

[spark 68]

Add the 3A FCU prior to the supply to the circuit for the room in question (bathroom?), then both your permanent and switched lives will be fused down.

 

[nickblake]

pick up the supply to the light and add it there it then protects the whole lighting circuit for that area including the fan this will be done before the switch so its feed in and out to the FCU feed then run a 1.5 out to the light and wire as you would with a normal light and fan configuration

 

[DIYBlues]

Thanks guys

I've already installed all the cabling back to the airing cupboard for both the TP and FCU, I read on another forum to install 2 x FCU's in line one connecting L, N and E and the next SL, N and E, what do you think of this method?

Here is diagram of my current cabling set up.

 

[nickblake]

Thanks guys

I've already installed all the cabling back to the airing cupboard for both the TP and FCU, I read on another forum to install 2 x FCU's in line one connecting L, N and E and the next SL, N and E, what do you think of this method?

Here is diagram of my current cabling set up.

View attachment 12862

Nice one so the easiest way to do it would be to put an FCU between the dist board and the lights on the feed if you do that the whole section would be covered by the one fuse , you could even put the fcu nest to the dist board and lable it up ,another way to do it would be use a grid with 2 fuses

 

[Guitarist]

If you install a 3A MCB in the CU you won't need the FCU. Otherwise, you could just install a 3A FCU where the lighting circuit feeds the bathroom and another where it feeds the en-suite.

 

[DurhamSparky]

just about to say exactly what you said...!!! ^^^^^^^^^^^^^^^^^

i did that recently on one of my jobs

 

[telectrix]

what software did you use to do that drawing.

 

[JUD]

Put the FCU where I have indicated. This will cover the bathroom and En-suite.

 

[Guitarist]

So many ways of doing it

 

[Strima]

For me I would place FCU's where the red rings are, can't be bothered with gucci programmes to do this stuff:



Just splits the circuits down a little.

On the main bathroom side, single line to FCU then split to fan and switch.

Many ways to do it but with out knowing how accessible your wiring is it's next to impossible to say.

 

[DIYBlues]

what software did you use to do that drawing.

Software is called Paint which you will find on all XP, Vista and Win 7 Operating systems under All Programes > Accessories

Thanks for all the replies

 

[Top Cat]

Software is called Paint which you will find on all XP, Vista and Win 7 Operating systems under All Programes > Accessories

Thanks for all the replies

Just for Tel. Paint is a software package on your computer, it's not what you put on a brush!Lol

 

[nickblake]

If you install a 3A MCB in the CU you won't need the FCU. Otherwise, you could just install a 3A FCU where the lighting circuit feeds the bathroom and another where it feeds the en-suite.

was going to mention that but some time you cant get a 3 amp mcb so depends on the CDU make