So the consensus is Loose wires, however a question - How is the burning caused on the socket interior? Via Arching?
What else could it be caused by?

Old fashioned thermal heat transfer from ohmic heating.
https://www.hunker.com/12609342/why-do-appliance-plugs-get-hot

https://reference.wolfram.com/language/PDEModels/tutorial/HeatTransfer/HeatTransfer.html

 

How is the burning caused on the socket interior?

Heating caused by a high resistance connection.

 

Heating caused by a high resistance connection.

Is it High Resistance because only part of the 4mm2 wire is touching the connector block(and loose part isnt in contact?)

 

Also, from my pic provided, can we 100% rule out current overloading?

 

Ive found this cable incredibly stiff, and already encountered a loose connection causing my socket to melt.
when I push down the socket face plate after connecting the wires up, I am suspecting it can cause to come loose.

Is there something like crimp ferrules or some other methods we can use to counter this problem proficiently

Mod: Merged the new Thread,

 

User a deeper box.
Find a screwdriver that really fits the screws.

Wiring a ring main in 4mm is unusual, it would require a very long run of cable to make it necessary to use anything other than 2.5mm, and so sockets are really designed to take two 2.5mm wires.
A 32A radial circuit would require 4mm, but that is usually remedied by connecting the last socket back the consumer unit to make a ring.

 

No t isnt at todays rates, but BTC goes up and down so 6 months of losses can turn into profit in a matter of hours

My colleague calculated that using surplus solar power for mining would be more profitable than selling it back to the grid at current feed-in tariffs.

 

Is it High Resistance because only part of the 4mm2 wire is touching the connector block(and loose part isnt in contact?)

The contact in the socket is surprisingly minimal. In the US version of that socket (for 15A), there are only two contacts to the conductor. In the screw versions, contact area is larger.

I'll post pictures later.
This is rated at 15A. Contact area circled in red on the bottom image.

This particular socket was deteriorating and fell apart when I was investigating an arcing condition when something was plugged in.

 

A loose wire, or an incorrectly inserted wire, will allow some electrical resistance, which, with the high current will generate LOTS OF HEAT. That heat will cause a temperature rise, which willincrease the resistance and genrate more heat. And the plastic parts will melt, and possibly ignite with flames, and then the situation gets rather nasty. I saw the result of that at one client's residence. Fortunately the connection gave out before the flames started, but the outlet was a mix of charred plastic and melted material. And the insulation was burned off of two inches of copper wire in the junction box. And the circuit breaker never tripped.

But running the "mining " computers to get bitcoin is a nasty business. You need industrial strength rated connectors properly installed.

 

My colleague calculated that using surplus solar power for mining would be more profitable than selling it back to the grid at current feed-in tariffs.

your colleagues calculations dont factor the inevitable change in BTC price,
I would rather mine coins that will eventually rise50%-500%(realistically), than a petty amount from the grid.

 

your colleagues calculations dont factor the inevitable change in BTC price,
I would rather mine coins that will eventually rise50%-500%(realistically), than a petty amount from the grid.

You don't have to listen to what our government has to say about crypto mining impact on climate, but here it is:
FACT SHEET: Climate and Energy Implications of Crypto-Assets in the United States | OSTP | The White House

Another resource: Crypto's Climate Impact: 8 Claims, Fact-Checked | Time

 

It seems that many bitcoin miners do not care one bit about anything other than personal profit. So why assist them in any way, shape, or form???

 

It seems that many bitcoin miners do not care one bit about anything other than personal profit. So why assist them in any way, shape, or form???

You have a point. They are nearly as bad as the frequent flyers for destroying the planet, but I wouldn’t wish a house fire on anyone.
If he burned his house down, do you think his insurance company would find an exclusion clause for Bitcoin mining?

Here’s a thought: If you were using electrical resistance heating to heat your house, would it be any worse to heat your house with a Bitcoin miner?

 

I do not wish a house fire on anyone. I do object to those who do not know what they are doing going ahead and causing all sorts of damage and destruction by their unknowing actions. And certainly not knowing how to correctly connect an electrical outlet, and then doing it incorrectly, is such an action. Quite different from damaging a stereo system because of not knowing howto solder and un-solder connections.

 

It would appear that the installation of a socket was more than a like-for-like replacement, so would be a criminal offence if it was in a “dwelling house” and undertaken by anyone not ”Part-P Registered”.

Interestingly, work on non-domestic premises requires a “competent person” who does not have to be registered, but work on domestic premises requires a “registered person” who does not have to be. . . . . .

 

It would appear that the installation of a socket was more than a like-for-like replacement, so would be a criminal offence if it was in a “dwelling house” and undertaken by anyone not ”Part-P Registered”.

Interestingly, work on non-domestic premises requires a “competent person” who does not have to be registered, but work on domestic premises requires a “registered person” who does not have to be. . . . . .

A perfect example of an individual representing that they are indeed competent while the opposite is true.

 

You don't have to listen to what our government has to say about crypto mining impact on climate, but here it is:
FACT SHEET: Climate and Energy Implications of Crypto-Assets in the United States | OSTP | The White House

Another resource: Crypto's Climate Impact: 8 Claims, Fact-Checked | Time

climate change is pure propaganda, When they were digging massive holes in africa to extract minerals, they didnt give a toss about the damage or climate.

The "rules" they push are for guilt tripping the masses, not themselves.

Soon as they got everybody to buy diesel cars, they put the fuel price up.

Now they are pushing electric cars,(no propaganda yet as they've yet to rake in billions en masse).
Yet, if you look at the facts, the actual damage done to the environment(and african kids) to gather the materials for the batteries is completely cost-ineffective, unsustainable, and isnt energy efficient at all, I dont hear you preaching about that?

Its tragic that the masses these days really do believe everything they are force fed, probably cant wait to get their 4th covid Jab.

Ian0 raised a solid point about using the heat as a means to warm your home, I bet that falls on death ears to many though... as the narrow-minded naysayers always ignore any valuable counters to their arguments.

 

Soon as they got everybody to buy diesel cars, they put the fuel price up.

You seem to be implying some sort of conspiracy. It’s not. Just the law of supply and demand. When there were few diesel cars, diesel was cheap and everyone bought diesel cars. This caused demand for diesel fuels to go up and caused diesel prices to follow.

I won’t blow your mind with the economics of lithium batteries and why there is no conspiracy there either.

 

Yup, I remember when gasoline was 65 cents/gal and diesel was 12 cents/gal. Mercedes 200Ds were pretty popular and not that bad a driver in the hills and mountains of Tennessee. Just didn't have any passing power @ 65MPH on the 2 lane backroads where you needed to get around a logging truck in a hurry.

 

Pure propaganda that Britain reached 40°C for the first time ever year, and this year the gulf stream is so disrupted that it won't stop raining? I suppose those wildfires in the Greek islands were just propaganda too.