Diagram review for Bathroom Re-Install

[sergeantash]

It was suggested in a previous thread by Holmslaw and Bongo that a 3amp FCU should be used for the fan circuit

No - I suggested either a RCD FCU with a 3A fuse or if you already had RCD protection I suggested a FCU with a 3A fuse.

These were to provide local isolation for the fan. I didn't mention the lights!

Ahh sorry Bongos - I'll get a photo tonight of my consumer unit and post to see if I can replace the MCB with an RCD for the upstairs lighting.

Overall how does my plan appear now?

 

[sergeantash]

Here's some pics of CU with and without cover removed...

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• sergeantash
• 7 May 2010
• 1

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• sergeantash
• 7 May 2010
• 1

Is this CU suitable for the upstairs lighting trip unit (3rd from left) to be replaced with a suitable 6amp 30amp RCD? If so could someone point me to the item I need to get?

Many thanks!

 

[GaryMo]

All your circuits are protected by the up front 30mA RCD.

 

[ban-all-sheds]

Am I still the only one who thinks this guy is in w a a a a a y over his head?

 

[sergeantash]

All your circuits are protected by the up front 30mA RCD.

Ahhh... and so a separate RCD isn't require for the bathroom electrics?

Can I drop one more complication into this...were I to add a shaver socket with a permanent feed, would I drop it down from the loopin junction box via it's own FCU with appropriately spec'd fuse?

...and finally is my diagram otherwise correct/acceptable now?

Am I still the only one who thinks this guy is in w a a a a a y over his head?

Please BAS, if you're not prepared to help/advise, please don't bother posting. I am genuinely trying to do this properly and very much appreciate the help and assistance that members here have provided.

 

[GaryMo]

No, it would be pointless using additional RCD's though you may want to have your existing RCD tested to ensure it's working within spec.

Shaver sockets, when supplied via a local lighting circuit, generally don't require FCU's. They're normally supplied from a local lighting circuit with a permanant supply.
Same with your mirror light (check the MI though).
Only the fan might require a FCU due to the MI possibly requesting protection by a 1A or 3A fuse (check which, if required).

 

[sergeantash]

No, it would be pointless using additional RCD's though you may want to have your existing RCD tested to ensure it's working within spec.

Good plan, will do.

Shaver sockets, when supplied via a local lighting circuit, generally don't require FCU's. They're normally supplied from a local lighting circuit with a permanant supply.

So formally to be compliant with regulations, it doesn't require an FCU unless the shaver socket manufacturer states so?

Same with your mirror light (check the MI though).

I'm assuming MI is Manufacturers Instructions? In which case the mirror light/demister doesn't request an FCU according to those.

Only the fan might require a FCU due to the MI possibly requesting protection by a 1A or 3A fuse (check which, if required).

Yeah the fan does state that it requires 3amp protection. I'll retain the FCU inline for that.

Thanks again for all of your help and patience - we all started somewhere and this experience has made me consider education to obtain electrical qualification!

I'll take some pictures of the installation afterwards and post here.

 

[GaryMo]

So formally to be compliant with regulations, it doesn't require an FCU unless the shaver socket manufacturer states so?

Correct, always read the MI (Manufacturers Instructions).

 

[ban-all-sheds]

Please BAS, if you're not prepared to help/advise, please don't bother posting. I am genuinely trying to do this properly and very much appreciate the help and assistance that members here have provided.

And I genuinely hope you don't find out the hard way that my advice was the best of all, and that all the other people helping and assisting you come to their senses.

But I'll leave it at that, and wish you luck - you're going to need bucketloads of it.

 

[sergeantash]

And I genuinely hope you don't find out the hard way that my advice was the best of all, and that all the other people helping and assisting you come to their senses.

This is a forum right? Where people post when they need assistance right? Rethink why you're here. I could have had a lot of respect for your apparent knowledge and wisdom by now.

But I'll leave it at that, and wish you luck

Good...now go change a fuse or something Victor.

 

[sergeantash]

Quick question - the set of 10 LED's that I intend to use (IP54, Zone 1 rated) have a transformer built into the plug itself therefore making it impossible to wire directly into the light circuit unless I spur from the light circuit a socket in the loft to be used for the LED's only (and appropriately/clearly marked).

Based on regulations/safety only, is this acceptable?

** UPDATE **

Just found this thread stating in summary that the plan is fine...//www.diynot.com/forums/viewtopic.php?p=139966#139966

 

[sergeantash]

I would just like to thank all of those that provided useful responses during the planning for my bathroom refit, I spend the weekend wiring the alterations and all is working beautifully!

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• sergeantash
• 16 May 2010
• 2

Here's the loft overview plan with guide notes:

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• sergeantash
• 16 May 2010
• 1

Here's some closeup detail pics for the electrics geeks

The Fan Isolator above the door of the Bathroom outside:

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• sergeantash
• 16 May 2010
• 1

The FCU for the Fan/Light Combo:

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• sergeantash
• 16 May 2010
• 1

The duct for the heated mirror and Bath Panel LEDs (duct actually continues down behind the wall:

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• sergeantash
• 16 May 2010
• 1

Fan/Light Unit wiring:

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• sergeantash
• 16 May 2010
• 1

Fan/Light Combo Wiring

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• sergeantash
• 16 May 2010
• 1

Bathroom Pullcord switch

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• sergeantash
• 16 May 2010
• 1

Fan/Light Installation:

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• sergeantash
• 16 May 2010
• 1

Single socket on light circuit (marked 'For Lighting Only') with RF plug connected to it to power Bath Panel LEDs:

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• sergeantash
• 16 May 2010
• 1

The Heated mirror unit without glass attached:

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• sergeantash
• 16 May 2010
• 1

Thanks again for your help and assistance!

 

[GaryMo]

Bathroom Pullcord switch

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• sergeantash
• 16 May 2010
• 1

What's the white area on the insulation at the terminations?
Have you used side cutters to strip the insulation?
The rear termination doesn't look too great.

 

[sergeantash]

What's the white area on the insulation at the terminations?
Have you used side cutters to strip the insulation?
The rear termination doesn't look too great.

Its paint...accidently painted the insulation. The terminals are clean and I always use proper electrical wire insulation strippers, it's just a bad photo.

 

[GaryMo]

Ahh, OK.