12v MR11 Low Voltage lighting tripping RCCB

[bernardgreen]

Plus a good circuit design will never come borderline close to the permissible allowed limit/s anyway.

Well it won't if cost of materials is excluded from the design.

 

[ban-all-sheds]

Yes, but that is just cable characteristics.

What do you mean by "just"?

It is indeed a cable characteristic - what units does it use?

when does your average electrician need to worry about millivolts and micovolts.

When he's looking at voltage drop figures...

What units does it use?

Again, that is giving the millivolt drop per amp per meter for a given cable size

when does your average electrician need to worry about millivolts

 

[securespark]

I was wondering what would happen if you connected a 9V battery across the mains?

Don't suppose you know the answer to that do you?

Let me just go out to the garage and I'll report back later.

 

[securespark]

Small pop, puff of smoke, top came off battery, breaker tripped.

Not very spectacular.

 

[ban-all-sheds]

Try a 12V SLA.

On a circuit with a larger breaker.

 

[securespark]

Hmmm....let me consider that carefully.

No.

 

[stillp]

Go into a PCB repair shop who repair logic level stuff, and ask them what they class as low voltage. I bet they will not say equal and above 50V AC/120V DC.

They will if they know what they are talking about.

 

[ericmark]

Small pop, puff of smoke, top came off battery, breaker tripped.

Not very spectacular.

I just put non rechargeable which looked like rechargeable in a charger for a couple of hours, and then back in my mouse, about 4 hours latter there was a bang and the mouse was in pieces as a result.

 

[J5]

Just to take the thread hijack back for a second... I found an earth pushed up against a live wire, seemed a bit squashed but not making contact. Replaced earth sleeve, rerouted wires. All good

Thanks for the input
Jas

 

[ban-all-sheds]

If it was causing an RCD to trip then it must have been making contact...