LED Lamps and extractor fan problems..

[davesparks]

Sorry chaps I'm not really following here.

Connecting the Line and S-Line opposite ends of the isolator - is this to keep the cores apart in the pattress?

In the cable!

Do you understand how capacitive coupling works?
There are many threads on here discussing if if you search.

 

[ash_s3]

Ah I see now, so the N and E are in between the two Lines of the cable.

And no I'm not clued up on capacitive coupling, just youtube'd it and nearly slipped into a coma listening to the guy!

 

[davesparks]

Then read up on it and understand it before you go any further.

Then you can diagnose whether or not this is the problem and design a suitable soloution.

 

[ash_s3]

Will do Dave, thanks for your input.

 

[HandySparks]

Ah I see now, so the N and E are in between the two Lines of the cable.

Exactly. The permanent live will then tend to induce a little current in the N and the E (which you don't care about) rather than the switched L, which is further away on the other side of the cable.

 

[davesparks]

Exactly. The permanent live will then tend to induce a little current in the N and the E (which you don't care about) rather than the switched L, which is further away on the other side of the cable.

It won't induce, the phenomenon is capacitive not inductive

 

[HandySparks]

It won't induce, the phenomenon is capacitive not inductive

I'm using the term in its general sense, "Bring about or give rise to". What's the concise term for "to cause a current to flow due to capacitive coupling"?

 

[davesparks]

I'm using the term in its general sense, "Bring about or give rise to". What's the concise term for "to cause a current to flow due to capacitive coupling"?

When discussing electricity the word induce has a specific meaning, using it otherwise is only going to give rise to confusion.

I doubt there is a concise term, we are talking about a technical/scientific subject which is something that doesn't work well with shortening terms down for convenience

 

[Silly Sausage]

I'm using the term in its general sense, "Bring about or give rise to". What's the concise term for "to cause a current to flow due to capacitive coupling"?

I think in these cases, it's just a case of the circuit acting as a capacitor connected across an AC voltage source.
So it's just the 'natural' (high end terminology there!!!) current flow, in these cases in the order of micro Amps.
Which are starting to have a/or producing, odd effects on newer low power gear.

 

[Octopus]

This may, or maynot be helpful but....

Today I investigated a bathroom where the lights (LED's) stayed on when the lights were off!

So I removed the cover of the ceiling mounted fan...... and narrowly avoided being "drenched" by the build up of water (condensation) that had accumulated and clearly the moisture was providing the "connection" between the SL and L.

With the fan cover off, and the fan disconnected, the lights now work perfectly.

Hope this is of use to some of you!

 

[topquark]

Condensation trap needed methinks :santa_smiley:

 

[Silly Sausage]

This may, or maynot be helpful but....

Today I investigated a bathroom where the lights (LED's) stayed on when the lights were off!

So I removed the cover of the ceiling mounted fan...... and narrowly avoided being "drenched" by the build up of water (condensation) that had accumulated and clearly the moisture was providing the "connection" between the SL and L.

With the fan cover off, and the fan disconnected, the lights now work perfectly.

Hope this is of use to some of you!

Just wash away all our clever theories then!

 

[sheppertonspark]

I was just searching for a resolution to a similar problem. Changed some filament lamps in a Bathroom yesterday to LED. Customer messaged this morning to say the fan has been running all night and keeping her awake.
I am going back today to fit a "snubber" across the feed and switch line. Same as you would use when the led lights keep flashing. If you need one Google Danlers snubber.
I will post if it works, hope this helps, Cheers C.

 

[UNG]

I was just searching for a resolution to a similar problem. Changed some filament lamps in a Bathroom yesterday to LED. Customer messaged this morning to say the fan has been running all night and keeping her awake.
I am going back today to fit a "snubber" across the feed and switch line. Same as you would use when the led lights keep flashing. If you need one Google Danlers snubber.
I will post if it works, hope this helps, Cheers C.

This thread is nearly 8 years old I hope he has fixed it by now