Ceiling fan wiring question

[BelfastGuy82]

I just bought this ceiling fan with remote from Amazon on a Black Friday deal, on the assumption that I could just wire it into the light circuit and use the normal light switch.

Let me quote from the manual though:


Safety Precautions

6. Do not connect the fan's power supply to any dimmers, potentiometers, or light switches, as it will cause the fan to malfunction and/or will damage the motor. The fan must be directly connected to a properly protected installation circuit (magnetothermal differential switch with the adequate size for the fan's consumption and technical specifications). Only use the fan's control to turn it on or stop it.


I've read the reviews for the fan, and watched YouTube videos on wiring fans in, and people seem to just be using the lighting circuit and the light switch... I guess the actual question is, giving what is stated in the manual, is that right or wrong...?

Also, I have no idea what a 'magnetothermal differential switch' even is.

 

[bernardgreen]

""magnetothermal differential switch "" is an RCBO. which is an MCB and an RCD combined.

The fan's controller will ( should ) control the rate of acceleration / deceleration when the fan starts and stops. This reduces the twisting forces on the fixings to the ceiling. Without care this twisting force can result in the fan tearing the fixings out of the ceiling

 

[BelfastGuy82]

""magnetothermal differential switch "" is an RCBO. which is an MCB and an RCD combined.

The fan's controller will ( should ) control the rate of acceleration / deceleration when the fan starts and stops. This reduces the twisting forces on the fixings to the ceiling. Without care this twisting force can result in the fan tearing the fixings out of the ceiling

OK, but do I actually need one, or are they just being over-cautious in the manual by recommending such a thing?

My understanding is that as a DIY'er I'm not allowed to touch the 'consumer unit', and I'd need a qualified electrician to put such a thing in.

If I do need one, how do I know how many amps it needs to be rated for?

(and if it makes a difference, I have 3 of the fans, for 3 separate rooms in a flat)

 

[jurassic sparkk]

Send a pic of the wiring and manual please.

What is the wattage of this fan?

 

[Murdochcat]

Is the ceiling strong enough to support a fan?

 

[BelfastGuy82]

Send a pic of the wiring and manual please.

What is the wattage of this fan?

On the motor housing it says "38W (Fan) 18W (LED Light)"

On the base / mounting plate it just has simple Live, Earth, and Neutral terminals, that run to a push-fit connector that connects to the main motor housing. Nothing special or complicated. (in my novice opinion)

I don't think there's anything of interest in the manual regarding the wiring. There is a single picture where "House power" is connected to the LEN terminals that I mentioned. That's it.

 

[BelfastGuy82]

Is the ceiling strong enough to support a fan?

It will be when I put additional wood between the joists, in rooms where it's necessary.

That much was obvious to me. It weighs about 5kg.

 

[jurassic sparkk]

Ok. 38W is acceptable, don't worry.
Send a picture of the existing wiring.

 

[Murdochcat]

It will be when I put additional wood between the joists, in rooms where it's necessary.

That much was obvious to me. It weighs about 5kg.

I commented on that because a lot of DIYers simply don’t have a clue

 

[BelfastGuy82]

Ok. 38W is acceptable, don't worry.
Send a picture of the existing wiring.

Acceptable in what regard...? If I'm going to disregard what it says in the manual, I need to know exactly on what grounds I'm doing it.

The existing wiring is just standard ceiling rose wiring.

 

[jurassic sparkk]

Acceptable in what regard...?

If I do need one, how do I know how many amps it needs to be rated for?

You don't need to worry about anything, just fit the fan and go.
Next!

 

[BelfastGuy82]

Again; I'd really need an explanation as to why I would disobey the manufacturer's advice...

 

[DetlefSchmitz]

Q. Does your lighting circuit have an RCBO or alternatively an MCB and an RCD?

 

[BelfastGuy82]

Q. Does your lighting circuit have an RCBO or alternatively an MCB and an RCD?

Appears to just be a single MCB for the Lights.

If you zoom in on the very bottom right, under the main switch, it says "CIRCUITS NOT RCD PROTECTED".