overheard conversation re 3phase working

[mhar]

3 people were discussing scheme membership and insurance and it sounded like eiher 'domestic installers,' or their insurance, does not cover work on 3 phase installations.
Some 6 months ago I was informed that all WPD supplies to new properties are to be 3 phase and this is now what is being planned for (presumeably because of the fact that gas is no longer going to be supplied to new estates + car charging etc).
Is this going to restrict who can work on new builds or are bodies such as the niciec going to have to allow their short course members to be let loose on pretty much anything?

 

[PEG]

So what special ticket does one need,to purchase 400v between phases stickers?

....Oh,and don't forget,the big plan of having this network of charging vehicles,being digitally brought in to use,as a giant back-up,for the grid...

Can hardly wait for all those calls to employers...."I won't be in to work,today,because Amazon's servers needed help,last night,and me cars flat..."

 

[PEG]

So what special ticket does one need,to purchase 400v between phases stickers?

....Oh,and don't forget,the big plan of having this network of charging vehicles,being digitally brought in to use,as a giant back-up,for the grid...

Can hardly wait for all those calls to employers...."I won't be in to work,today,because Amazon's servers needed help,last night,and me cars flat..."

 

[freddo]

I thought the no gas thing was just for central heating. I wouldn't want to be without a gas hob, electric hobs suck!

 

[rapparee]

What’s so special about 3 phase? It’s still just just low voltage and already in loads of domestic installations

Would you really let a Electrical Trainee loose on a 3 phase installation.

What if someone who doesn't know what they are doing interconnects two ring circuits on different phases.

 

[rapparee]

I thought the no gas thing was just for central heating. I wouldn't want to be without a gas hob, electric hobs suck!

The gas network is still getting rolled out around here.

 

[Charlie_]

Would you really let a Electrical Trainee loose on a 3 phase installation.

What if someone who doesn't know what they are doing interconnects two ring circuits on different phases.

There are thousands of domestic 3phase installations out there..

I have no concern for those that are incompetent, they are carrying out work all the time at their own risk..
and unfortunately at the risk of others.
Whether it’s 3 phase or not..

If someone is stupid enough to cross phases over 2 circuits then they are capable of getting live conductors and earths mixed up too..

An insurance company should be asking for proof of electrical qualifications, experience, etc and then provide insurance accordingly..

 

[TJ Anderson]

What if someone who doesn't know what they are doing interconnects two ring circuits on different phases.

Then a large current will flow and the OCPD'S will operate. There are loads of people in commercial and industrial maintenance who don't really know what they are doing too!!

 

[Chris1234]

Any electrician, Electrical Trainee or not will understand the 230 line to neutral and 400 phase to phase...

They claim to.
But I’ve come across a few that believe three phase is 400v to earth, therefore they don’t actually understand any of it.

 

[static zap]

some believe ..3 phase is 400v to earth.....

Close to the truth -Put your self between phases,
any you may end up in the earth !

 

[LightGEN]

I thought the no gas thing was just for central heating. I wouldn't want to be without a gas hob, electric hobs suck!

As I understand it, the proposal is that new builds will not be allowed to connect to the gas grid from 2025 onwards.
I believe that the Dutch have already implemented such a scheme.
I think I may have read something about provisions for gas supply using bottled gas where required for hobs. Such arrangements are common in the middle east. likely elsewhere.

 

[LightGEN]

I read that the future planning is intended to support Air/Ground source heating, Induction hubs and three phase EV charging.
I wouldn't be surprised to see kitchens on one phase, heating on another phase, other circuits on third phase - charging using all phases. I could see some sense in the DNO specifying which of those should connect to which phase for district load balancing purposes ....perhaps that's too organised!

 

[freddo]

They do realise that a huge chunk of UK electricity is generated by burning gas, don't they?!

 

[LightGEN]

They do realise that a huge chunk of UK electricity is generated by burning gas, don't they?!

The future may include CO2 capture for gas power stations if the technology can be made to work at a sensible cost.

 

[Carl S]

charging using all phases. I could see some sense in the DNO specifying which of those should connect to which phase for district load balancing purposes ....perhaps that's too organised!

Unfortunately FUN (Flexible Urban Networks) has been ditched after a three year trial around the London embankment area. Too expensive!


The idea was sound, automatically linking overloaded sections of the LV network to under loaded sections via inverter panels or remote controlled UG link boxes. Transformer A is overloaded, transformers B and C have spare capacity. Using FUN loads can be shifted around to even things out. Bear in mind UKPN transformers will stand 125% summer or 150% winter overload for limited times.


Start chucking EV chargers in to the equation and something is going to go BANG!

 

[mhar]

....Oh,and don't forget,the big plan of having this network of charging vehicles,being digitally brought in to use,as a giant back-up,for the grid...

Can hardly wait for all those calls to employers...."I won't be in to work,today,because Amazon's servers needed help,last night,and me cars flat..."