New Lighting circuit - how are fans etc. connected | on ElectriciansForums
Guest viewing is limited

Discuss New Lighting circuit - how are fans etc. connected in the DIY Electrical Advice area at ElectriciansForums.net

Wavy Davy

-
DIY
Joined
Oct 21, 2015
Messages
3
Reaction score
0
Location
Belfast
Hi,

I'm installing a new lighting circuit. Normal stuff - radial circuit with lights looped in on the ceiling roses. My question is - how are things like bathroom extraction fans, smoke alarms or an outside above door light normally included in a new circuit? Are they added as spurs off the ceiling roses or looped in?

Thanks
 
Extract fan can be spurred off lighting circuit, usually fused down to 3A. Smoke alarms are usually put on a dedicated circuit, although they can be spurred off lighting circuit, some people prefer it as to turn of the smokes they would have to turn off the lighting circuit. Outside light can be spurred or extended off lighting circuit as well.
 
Agree with above extractor looped off the lighting circuit to a 3amp fused spur (if manufacturer details specify) and also to a 3pole isolator outside of the bathroom then to the extractor, as for the smoke alarm if it's a new install/rewire put them on there own circuit and the out side light just take off the closest lighting point with line and neutral at it.
 
Used to put smokes on there own circuit but not any more, the amount of times i see them with battery compartment open and circuit off is unbelievable , people just forget and think i must change that battery.

best to run it on its own circuit but put it in the same MCB as a lighting circuit, good for testing after as smoke circuit can be removed easily.
 
I agree with most, I almost always put smoke detectors on their own circuit, a lot simpler most of the time!
 
Agree with above extractor looped off the lighting circuit to a 3amp fused spur (if manufacturer details specify) and also to a 3pole isolator outside of the bathroom then to the extractor, as for the smoke alarm if it's a new install/rewire put them on there own circuit and the out side light just take off the closest lighting point with line and neutral at it.
Ooh, you're so 16th edition! :)
 
Hi,

I'm installing a new lighting circuit. Normal stuff - radial circuit with lights looped in on the ceiling roses. My question is - how are things like bathroom extraction fans, smoke alarms or an outside above door light normally included in a new circuit? Are they added as spurs off the ceiling roses or looped in?

Thanks


What does your Electrician say about it?
 
It is all dependent on what Grade of smoke/heat detection is installed, and what standard the detection is manufactured to.
Grade E must be installed on its own non rcd or rcbo circuit. With prevision for anti tampering by key or tool and isolation to the detector for servicing.
Grade D can be installed on an existing or its own circuit, with the same prevision of tampering and isolation.
 
Ooh, you're so 16th edition! :)

How do you make that out? It was called the phase conductor under the 16th Edition. It was the 17th Edition which renamed it the line conductor.

It will always be phase to me though.
 
How do you make that out? It was called the phase conductor under the 16th Edition. It was the 17th Edition which renamed it the line conductor.

It will always be phase to me though.

Yeah, my bad! But I'm the same, it's etched into my brain as it's always sounded correct terminology since it was introduced in the 15th edition (that and live), that's why it sounded wrong when indeed it wasn't.
 
Ooh, you're so 16th edition! :)

Haha I started college during the 27th amendment one so we had to call it the line conductor any time we called it the live we lost marks and was told the answer was wrong as both line and neautral conductor is the live conductor haha
 
Last edited:
Hi,

I'm installing a new lighting circuit. Normal stuff - radial circuit with lights looped in on the ceiling roses. My question is - how are things like bathroom extraction fans, smoke alarms or an outside above door light normally included in a new circuit? Are they added as spurs off the ceiling roses or looped in?

Thanks
Gasp!!!
 
Thanks for all the info. I'm laughing at how my newbie question sparked off so much debate! Glad you enjoyed it. :smile:
 
I'm not laughing, if you need to ask this question then surely you should not be installing anything.
 

Reply to New Lighting circuit - how are fans etc. connected in the DIY Electrical Advice area at ElectriciansForums.net

Similar threads

Hello Brianmoooore, Thanks for yor reply - Sorry that I did not see your message until today - the Forum replies notification emails about your...
Replies
7
Views
625
It's no good thinking they need to be sure. Simple continuity tests will verify any breaks.
Replies
7
Views
1K

Recommended Sponsor News

Quickwire Now Sponsor ElectriciansForums.net

I am sure you will join me in welcoming our newest sponsors of ElectriciansForums.net - Quickwire! They have decided to join us after seeing you guys discussing their products here. Now we have an expert on board that you can chat to @Quickwire-Sam who will be happy to answer your queries!

[ElectriciansForums.net] Quickwire Now Sponsor ElectriciansForums.net


@Quickwire-Sam said "At Quickwire, we're all about speed, safety, and reliability. We're a family-run business, and every Quickwire connector is proudly made right here in the UK, ensuring noticeable quality. In short, Quickwire is the fastest connection method on the market. Whether you're an experienced electrician or a DIY enthusiast, Quickwire makes electrical connections ridiculously quick and easy. We're passionate about blending British craftsmanship with innovation. If you have any questions or if there's any way we can help, please just ask me!"

Exclusive Forum Offer! Free euro 2024 wall chart for first 10 responses!

Hi everyone,

We have 10 exclusive Uheat EURO 2024 Wallcharts to giveaway for Electricians Forum Members! The first 10 people to reply YES to this thread - I will message and get them sent out to you just in time for this years tournament! GO GO GO

PCBWay Now Sponsor ElectriciansForums.net!!

I hope you will all join me in welcoming our newest sponsor to the forum PCBWay! You can contact their friendly people by sending a message to @PCBWay who will be happy to answer your queries.

Welcome to the community and thanks for your sponsorship!

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

PCBWay provides services including PCB Prototype and batch Production, PCB Assembly (SMT), 3D Printing, CNC Machining, PCB Design, Electronics Modules Selling, etc. We are committed to meeting the needs of global makers from different industries in terms of quality, delivery, cost-effectiveness, and any other demanding requests in electronics.

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Thread starter

Joined
Location
Belfast

Thread Information

Title
New Lighting circuit - how are fans etc. connected
Prefix
Forum
DIY Electrical Advice
Start date
Last reply date
Replies
16
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top