RCBO problems

[BLBelfast]

Is it not white?

 

[IQ Electrical]

Yours might be

 

[antimatter]

No they dont . Some manufacturers do, some dont. this one controlgear or some other cheap ****e, dont.

Wylex, Merlin, MK, crabtree, volex do provide flyleads, which manufactures dont?

 

[Marvo]

I think there was an issue with your quote tags, it looks like you're arguing with yourself

 

[IQ Electrical]

Devices that provide double pole isolation on tripping would not have a need for an earth fly lead.

 

[Sintra]

Have a look at this video.

 

[nickblake]

Wylex, Merlin, MK, crabtree, volex do provide flyleads, which manufactures dont?

Proteus contactum M2

 

[Engineer54]

Have a look at this video.

Typical!!! another manufacturer trying to cut there costs with there own misleading information. They want to remove a function that saves them money, but not you!!
Then go on to try and convince you that it's time and money saving for the contractor.
Not a mention that those RCBOs without the functional earth lead will cost any less than those With, that's because there isn't any cost saving...

It's all Money, money, money these days, paying more for less is the order of the day!!!!

 

[antimatter]

Devices that provide double pole isolation on tripping would not have a need for an earth fly lead.

Where in the OP does it mention Double Pole?

 

[IQ Electrical]

Where in the OP does it mention Double Pole?

I'm explaining that the earth fly lead is used in the event of a lost supply neutral but in the case of double pole devices this is not needed because in tripping condition, the neutral will also be isolated.

That is why many BS 61008 RCD's do not have an earth fly lead.

 

[antimatter]

Proteus contactum M2

Thats why they are a third of the price of the good branded one.

You gets what you pays for I'm afriad

Low price as many things in this world really does mean low quality

 

[Mr.Si]

I too love these mystery threads. My thoughts too would be a link between the two (three?) circuits that are tripping due to both RCBOs going. I'm no experienced person, as you all know, I'm still in training, but surely if two RCBO devices are tripping, then the two radials are not fully split from the ring...?

When I was learning about how rings were wired, I was taught that to get even continuity values for each socket, you don't just wire them from:
board -> 1 -> 2 -> 3 -> 4 -> board
you'd more likely do
board -> 1 -> 3 -> 2 -> 4 -> board

so just wondering if there is any substance in this.

So long lead continuity tests from both RCBOs to each socket?

 

[Dave_]

I agree with those who have mention a neutral fault. Borrowed or crossed.... I would disconnect all circuits. and then connect your two radials. See if RCBO holds, then try connecting others, if one causes RCBO to trip, that is where you have a connection. May help not sure, sorry if i´ve missed something obvious.

In my experience a borrowed neutral may not cause both RCBO´s to trip. The one that goes first should technically be the one closer to the origin i.e. RCD upstream, due to a shorter fault path, but in this case they may both go if next to each other.....

 

[BLBelfast]

Sorted

Went back today. No idea how both radials tripped but was was talking to the client in the kitchen and he said the RCBOs were holding yesterday and today apart from when he switched his wash machine on. Pulled the washing machine out and turns out behind the single socket the holding screw had pierced through the neutral slightly, so in essance it was fine till someone pushed past the washing machine and therefore "wriggled" the socket.

I can only assume that the neutral to earth fault was travelling back to the CU and that is why both RCBOS were tripping, but doesnt explain why the kitchen ring wasnt.

 

[IQ Electrical]

Nice one!