Mains Upgrade- Usually FREE in UK.
- Thread starter Roy.K.Riches
- Start date
jonnoshore
physicist, engineer and healer
Roy,
What kind of shower makes the stereo sound better?
Is it a power, gravity or electric mains water?
I may get an improvement by having mixer taps now my boiler is at mains water pressure and delete the electric show spur...
I have mailed you seprately to ask about shower types.
What kind of shower makes the stereo sound better?
Is it a power, gravity or electric mains water?
I may get an improvement by having mixer taps now my boiler is at mains water pressure and delete the electric show spur...
I have mailed you seprately to ask about shower types.
rontoolsie
pfm Member
But the US 60Hz is 20% better than the Euro 50 Hz ;-)
Hi Roy,
I checked my fuse, adjacent to the meter and it is indeed a 100A rating.
However, the cable from the meter cupboard runs into my house, through an adjacent wall, to a high level fuse box which is rated at 60A. The cabling then runs approx. 15m to the consumer unit.
Not pretending to know much about electricity, in general, could you advise me on the need, if required, to upgrade this internal mains fuse?
Many thanks
Brian
I checked my fuse, adjacent to the meter and it is indeed a 100A rating.
However, the cable from the meter cupboard runs into my house, through an adjacent wall, to a high level fuse box which is rated at 60A. The cabling then runs approx. 15m to the consumer unit.
Not pretending to know much about electricity, in general, could you advise me on the need, if required, to upgrade this internal mains fuse?
Many thanks
Brian
colasblue
pfm Member
Quote
"I actually have two 100A fuses, with a cable from each going to the meter, and another two cables onwards to the consumer unit.
Is this normal? Is it a 200A supply?!"
You would appear to have a two phase supply. UK domestic installations can provide only 100A per phase, so yes it is a 200A supply, but also has additonal possibilities for HIFi - Like running your Linn Lingo on one phase and everything else on the other.
You can also combine them to get 400V so careful if you're doing any DIY wiring !
Do you have an incredibly big house or a home workshop or something to get a supply like that ?
"I actually have two 100A fuses, with a cable from each going to the meter, and another two cables onwards to the consumer unit.
Is this normal? Is it a 200A supply?!"
You would appear to have a two phase supply. UK domestic installations can provide only 100A per phase, so yes it is a 200A supply, but also has additonal possibilities for HIFi - Like running your Linn Lingo on one phase and everything else on the other.
You can also combine them to get 400V so careful if you're doing any DIY wiring !
Do you have an incredibly big house or a home workshop or something to get a supply like that ?
jonnoshore
physicist, engineer and healer
So what would it take to blow this fuse?
(I assume this is what you need to do to get the housing changed.
Is 100 Amps the maximum?
I have a 10.8 kW shower
electric hob, electric cooker, 3 kw heater, tumble dryer, kettle, 2 wall paper steamers,
That should be ~20 kW excluding the HiFi. Is 20kW enough?
(I assume this is what you need to do to get the housing changed.
Is 100 Amps the maximum?
I have a 10.8 kW shower
electric hob, electric cooker, 3 kw heater, tumble dryer, kettle, 2 wall paper steamers,
That should be ~20 kW excluding the HiFi. Is 20kW enough?
colasblue
pfm Member
In response to Mr Marsbar - if your equipment is correctly wired there is no problem at all running different items on different phases. Thats exactly what they used to do at the Audio Counsel in Oldham because their supply was so bad.
To Mr Jonnoshore
I wouldn't recommend trying to blow your fuse. It would take a 100% overload for about a minute or a 20% overload for several hours.
It would also render you completely devoid of electricity until the board came to replace it, and you'd probably blow all the fuses in your consumer unit before the fuse actually went.
And there would be a big bang, a lot of smoke and possibly quite a lot of mess.
Much easier to just tell them you want to install a bigger shower, and they'll change it for free. You might get 100A but not everybody can dget that much - it depends on what the local suppy can deliver.
To Mr W - of course higher frequency transformers are smaller. magnetic coupling efficiency is a function of frequency - Faraday's first law E = Grad Phi, higher frequency higher grad I believe. Hence you can get away with fewer turns at high frequencies to get acceptable coupling. How big do you think a 5Hz transformer would need to be ? size of a house perhaps ?? You still don't get any more power ! Of course it tops out because above a certain limit the coupling gets lost in the hysteresis which is why MC transformers have to have mu metal cores rather than Iron.
Why don't we have higher frequency mains then ?? - could it be that the mechanical engineers are uncomfortable with the idea of gigantic turbines running faster than 3000 or 3600 rpm. The 24000 rpm needed for 400Hz is very scary, even small F1 engines can't go faster than about 18000. Of course if you only want a small amount of electricity and synthesise it electronically its a bit different, or if you have a high speed jet turbine to connect to ...
To Mr Jonnoshore
I wouldn't recommend trying to blow your fuse. It would take a 100% overload for about a minute or a 20% overload for several hours.
It would also render you completely devoid of electricity until the board came to replace it, and you'd probably blow all the fuses in your consumer unit before the fuse actually went.
And there would be a big bang, a lot of smoke and possibly quite a lot of mess.
Much easier to just tell them you want to install a bigger shower, and they'll change it for free. You might get 100A but not everybody can dget that much - it depends on what the local suppy can deliver.
To Mr W - of course higher frequency transformers are smaller. magnetic coupling efficiency is a function of frequency - Faraday's first law E = Grad Phi, higher frequency higher grad I believe. Hence you can get away with fewer turns at high frequencies to get acceptable coupling. How big do you think a 5Hz transformer would need to be ? size of a house perhaps ?? You still don't get any more power ! Of course it tops out because above a certain limit the coupling gets lost in the hysteresis which is why MC transformers have to have mu metal cores rather than Iron.
Why don't we have higher frequency mains then ?? - could it be that the mechanical engineers are uncomfortable with the idea of gigantic turbines running faster than 3000 or 3600 rpm. The 24000 rpm needed for 400Hz is very scary, even small F1 engines can't go faster than about 18000. Of course if you only want a small amount of electricity and synthesise it electronically its a bit different, or if you have a high speed jet turbine to connect to ...
Peter Scowcroft
Nescient Round Earther
Correct me if i am wrong but a 100amp fuse with 240 volts running through it will require 24kw to blow. Does anyone know if these are fast or slow fuses?
Peter Scowcroft
Nescient Round Earther
Class A rotel amps. They use 1kw continuously. They seemed a great deal at the price till I saw my £175 month electrcity bill!!!!!!!!!!!!!!!!!!!!!!!!!!!
now switched from shitty Npower to scottish electricity, cheaper and renewable energy
now switched from shitty Npower to scottish electricity, cheaper and renewable energy
Laurie Saunders
The Full Half-Hour
Don`t class A amps use less power when they are passing signal....you could leave them with volume on max into an 8ohm resistor when not in use?
laurie
Tom is quite right here.
I did this and supected at first that the benefits might have been due to simply "contact effects" ie by simply inserting a new fuse I maight have inadvertantly made a better contact
A number of repeats with 60A and 100A showed (me) conclusively that the 100A rated fuse gave definite, repeatable improvements
Laurie
Peter Scowcroft
Nescient Round Earther
good idea!
Peter Scowcroft
Nescient Round Earther
just a thought, the less resistance on the fuse the better...I think will bypass that fuse like i have done on my hifi.
I can't seeany down side of using home modified hifi with no protection all the way down to the main transformer. Hell, what is the worst that could happen?
If you live in the York area and your lights go out you know why!
I can't seeany down side of using home modified hifi with no protection all the way down to the main transformer. Hell, what is the worst that could happen?
If you live in the York area and your lights go out you know why!
