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Discuss Dodgy trade pictures for your amusement! - 1 Million Views! in the UK Electrical Forum area at ElectriciansForums.net

I like this one. The Air Con 'engineers' labelled up 'AC' without taking the schedule out of it's see through sleeve.

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lots of diy folks understand that the live carries the power to the appliance and is therefore "dangerous" perhaps they thought that they should double up just in case?
maybe to reduce the current on the neutral they have used the earth instead and that is why the "improvement" has been added??
 
Call out this morning for an elderly couple as they had no power due to the RCD tripping all the time. It also caused a flood due to the toilet pump not working and overflowing. Electric had been off all night it seems.

So diverted from the job I was going to and went to sort the problem. After a bit of testing and fault finding I discovered this. All done by an ‘electrician’. 🤦🏼‍♂️

One of the diodes in the light had blown causing the fault. Maybe due to the fact it could pull 32a if it wanted to!

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Been to look at a job this evening on the way home. I do love rich folk with farms and stately homes.

‘We need the sheds connecting back up. There’s a board etc in there which is fine. Just need the power back in there’

Here is said board which is apparently fine… 🤨 The T&E is the old supply cable. And the yeehaw 🤠 glanded armour is supply to another shed. 😂

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Called out to a boiler not working and keeps shutting off. Plumber blamed the boiler, Manufacturer sent an engineer who said it’s wired wrongly. Plumber said his spark has wired it properly and the property has obviously got dodgy wiring.

I’ll let you draw your own conclusions and yes. That is a 3pole fan isolator. 😂🤦🏼‍♂️

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I’ll let you draw your own conclusions and yes. That is a 3pole fan isolator. 😂🤦🏼‍♂️

It's normal to fit a 3 pole isolator next to the boiler if the switchfuse is remote from the boiler, this satisfies manufacturers and gas-safe requirements for a local isolator to the boiler.
Obviously it needs to be 3 pole in order to isolate live, neutral and switched live.
 
I would have used a TP isolator as well, but would have fitted it on a PVC surface box, fitted with a 20mm gland for strain relief of the flex.
Is there something a bit dubious where the flex connects to the boiler PCB?
 
It's normal to fit a 3 pole isolator next to the boiler if the switchfuse is remote from the boiler, this satisfies manufacturers and gas-safe requirements for a local isolator to the boiler.
Obviously it needs to be 3 pole in order to isolate live, neutral and switched live.
That’s the point, it isn’t. The grey T&E coming down the wall is direct from the CU.
 
I would have used a TP isolator as well, but would have fitted it on a PVC surface box, fitted with a 20mm gland for strain relief of the flex.
Is there something a bit dubious where the flex connects to the boiler PCB?

If you follow the black wire from the flex which is in terminal RT. That leads back to the centre common on the 3 pole switch.

The only cable connected on the outgoing 3C&E is the brown into Common L1

The L & N on the T&E are connected to L2 and Common N.

I might be mistaken as I’ve not seen a new boiler like this round my way. Most are old style S-Plan systems from oil boilers. But I’m not sure how that is ever going to supply the right signal from the controller.
 
If you follow the black wire from the flex which is in terminal RT. That leads back to the centre common on the 3 pole switch.

The only cable connected on the outgoing 3C&E is the brown into Common L1

The L & N on the T&E are connected to L2 and Common N.

I might be mistaken as I’ve not seen a new boiler like this round my way. Most are old style S-Plan systems from oil boilers. But I’m not sure how that is ever going to supply the right signal from the controller.
Shouldn't the wires be pushed into the holes on the left of the block?
 
If you follow the black wire from the flex which is in terminal RT. That leads back to the centre common on the 3 pole switch.

The only cable connected on the outgoing 3C&E is the brown into Common L1

The L & N on the T&E are connected to L2 and Common N.

I might be mistaken as I’ve not seen a new boiler like this round my way. Most are old style S-Plan systems from oil boilers. But I’m not sure how that is ever going to supply the right signal from the controller.
If I had to guess, it looks like the black and red are the supply from the CU, and are joined to the blue and black on the boiler flex.
That seems wrong if the flex black is the switched live.
I'd assume the 3 core is the incoming switched live from a controller, and this appears to go to the brown in the boiler flex.

So boiler side, if black is the switched live, and brown is the PL it's definitely mixed up. I'm also intrigued where the controller is getting power from.
Any rate, it's prove everything from first principles and start again, with an FCU!
 
So what I’m trying to fathom, as the instructions aren’t great. Is how this should be wired as the Vaillant engineer said it should be wired with a 5 core cable.

They have done that but cut some of the cores in the flex and only wired one to the controller.

This is how the instructions say the power should come in. Sorry not very clear as it’s a photo I took to take away and look at.

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So L, N & E

If you then wire in a controller you have to do it like this. So the live is doubled up and switched live is in RT. The bridge has been removed as I checked it.

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So it seems it’s a bodge between 3 & 5 core wiring. But I need to work out how to wire this now and plumb in a FCU as well.
 
So it seems it’s a bodge between 3 & 5 core wiring. But I need to work out how to wire this now and plumb in a FCU as well.
It just needs a supply and an extra core for the RT terminal.
When the RT (room thermostat) terminal becomes live, the boiler will fire. The Live can come from the supply side, it doesn't need to loop back.
You also need to remove the little link that says "ignore the room thermostat" on the other plug as per your photo.
 
It just needs a supply and an extra core for the RT terminal.
When the RT (room thermostat) terminal becomes live, the boiler will fire. The Live can come from the supply side, it doesn't need to loop back.
You also need to remove the little link that says "ignore the room thermostat" on the other plug as per your photo.
That link has been removed.

The 3C & E goes to the controller. So when I go back next week I'll have to look in that and see which core is connected to the RT in that.

At the moment if the CH & HW are left on it stays working. However, because the RT is obviously not connected, if left to be controlled on a schedule it then won't fire up and throws a fault.

Hence I think I might need to start from scratch, put a FCU in and then work from there.
 
That's a cracker!
You can easily see that those two extended cpc's once had a former happier life when they lived in Wylex land....
Yup was a old wire rewireable fusebox.

Garage flat roof leaked into light and blew the fuse, man came out to fix the flat roof and said e could upgrade the board aswell and as you can see.......
 

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