View the thread, titled "What cable size and breaker would I need for two extractor fans in a public toilet? 1.5mm 3 core and a 20amp rcbo?" which is posted in Electrical Wiring, Theories and Regulations on Electricians Forums.

Do they make special fans for the UK, different from the millions they make for countries where you can't get any overload protection beyond the circuit OPD?
That is a very good question actually. I think it has less to do with the type of fan and a little more to do with the " fuse culture" in UK (and ROI). The only place (usually) you will find fuses in the continent is at the CU. Of course in UK you are obliged to have 13 amp fused plug tops because of the 32 amp ring circuit. But sometimes you also install fuses for convenience. We may for instance install several FCU, s on a circuit for small appliances whose purpose is to ensure one faulty appliance does, nt take the whole circuit out
 
The reason some manufacturers suggest a 3A fuse is for fire protection so should the fan seize then the theory is the fuse will rupture before the windings overheat and catch fire. There was a study I found online but can't find now where this was put to the test and the success of the 3A fuse was dependent on the manufacturer, some worked whilst some did not.
 
Last edited:
The reason some manufacturers suggest a 3A fuse is for fire protection so should the fan seize then the theory is the fuse will rupture before the windings overheat and catch fire. There was a study I found online but can't find now where this was put to the test and the success of the 3A fuse was dependent on the manufacturer, some worked whilst some did not.
Good comment and new information for me. I must be honest and say I have never installed a 4 " fan that required an inline fuse. I have also not come across them over here (yet). However I must also say I have at times replaced fans without rigidly reading every word in the instruction manuel so that is a good reminder for me
 
The reason some manufacturers suggest a 3A fuse is for fire protection so should the fan seize then the theory is the fuse will rupture before the windings overheat and catch fire.
So are they selling us different fans to the ones they sell in countries where, short of a dedicated circuit, you can't put them on a 3A fuse?
 
OK - so it goes on a 6A, like millions of fans here on lighting circuits.

Are the multinational fan makers producing different products for here, such that our 6A circuits won't do, but French ones will?
 
OK - so it goes on a 6A, like millions of fans here on lighting circuits.

Are the multinational fan makers producing different products for here, such that our 6A circuits won't do, but French ones will?
I have no idea what you are asking?
 
The requirement for a 3amp inline fuse in the UK is generally from the manufacturer, not a regulation.
Indeed.

So why do they require that in the UK when they don't require it in other countries?

As I said
Do they make special fans for the UK, different from the millions they make for countries where you can't get any overload protection beyond the circuit OPD?

So are they selling us different fans to the ones they sell in countries where, short of a dedicated circuit, you can't put them on a 3A fuse?
 

Reply to the thread, titled "What cable size and breaker would I need for two extractor fans in a public toilet? 1.5mm 3 core and a 20amp rcbo?" which is posted in Electrical Wiring, Theories and Regulations on Electricians Forums.

Best EV Chargers by Electrical2Go! The official electric vehicle charger supplier.

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

Advert

YOUR Unread Posts

Daily, weekly or monthly email

Thread starter

Joined
Location
Essex
If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
United Kingdom
What type of forum member are you?
Practising Electrician (Qualified - Domestic or Commercial etc)

Thread Information

Title
What cable size and breaker would I need for two extractor fans in a public toilet? 1.5mm 3 core and a 20amp rcbo?
Prefix
N/A
Forum
Electrical Wiring, Theories and Regulations
Start date
Last reply date
Replies
41

Advert

Thread statistics

Created
PaulDun41,
Last reply from
Soi disant,
Replies
41
Views
5,325

Advert

Back
Top