The pressure output of an electric show is proportional to the wattage
of the heating element. True or false?

My daughter has a 8.5kw shower, and it is like standing under a faulty
watering can. My shower runs direct off the combi boiler, and as our
pressure is good so is the shower.

What is the highest wattage electric shower available, and how powerful
are they? I've tried a google search but many suppliers don't state the
wattage. I can find no supplier either in Stoke on Trent or Manchester
who actually demonstrate showers, a bit like buying a pig in the poke
methinks.

Any help or ideas most welcome
--
Please do not reply by Email, as all
emails to this address are automatically deleted.

On Sun, 08 Aug 2004 19:20:04 +0100, Broadback
wrote:

The pressure output of an electric show is proportional to the wattage
of the heating element. True or false?

Not directly - it is closer to the flow output.

A given rating of shower will be able to heat a certain volume of
water from one temperature to another in a given time.

Thus, the greater the power rating of the shower for a given input
water temperature, the greater the flow rate can be for a given output
temperature.


My daughter has a 8.5kw shower, and it is like standing under a faulty
watering can.

Yes they are, and that is on a good day. In the winter it will be
worse.


My shower runs direct off the combi boiler, and as our
pressure is good so is the shower.

This is because the boiler is able to deliver 2 - 5 times the 8.5kW
figure that you mention above.



What is the highest wattage electric shower available, and how powerful
are they?

For general domestic use, around 10kW, so hardly an improvement.

It is very easy to predict the results and this is not a worthwhile
upgrade.



I've tried a google search but many suppliers don't state the
wattage. I can find no supplier either in Stoke on Trent or Manchester
who actually demonstrate showers, a bit like buying a pig in the poke
methinks.

Any help or ideas most welcome

Go for something other than an electric shower. They are
disappointing in comparison to pretty much anything else.



..andy

To email, substitute .nospam with .gl

"Broadback" wrote in message
...
The pressure output of an electric show is proportional to the wattage
of the heating element. True or false?

My daughter has a 8.5kw shower, and it is like standing under a faulty
watering can. My shower runs direct off the combi boiler, and as our
pressure is good so is the shower.

What is the highest wattage electric shower available, and how powerful
are they? I've tried a google search but many suppliers don't state the
wattage. I can find no supplier either in Stoke on Trent or Manchester
who actually demonstrate showers, a bit like buying a pig in the poke
methinks.

Any help or ideas most welcome
--
Please do not reply by Email, as all
emails to this address are automatically deleted.

The pressure at the output of a shower generally rises as the wattage of the
heating element rises, yes. Although, you would more correctly say that
(all other things being equal), the available flow-rate at a given demand
temperature is proportional to the wattage of the heating element. Don't
forget that the pressure you experience is more a factor of the shower
head, not the shower unit.


Er, try...

www.mirashowers.com

www.gainsboroughshowers.com

www.tritonshowers.co.uk

http://www.applied-energy.com/redring/products/

http://www.diy.com/diy/jsp/bq/catego....jsp?CATID=236

http://www.focusdiy.co.uk/icat/c110401

http://www.screwfix.com/

They all tell you what the wattage is...

The biggest electric shower you can get is 10.8kW, because 240 Volts x 45
Amps = 10,800 Watts, and a 45Amp fuse/MCB is the biggest size you would put
in a domestic-type consumer unit.

HTH

Smudger

In article , Smudger
smudger@here.? writes

"Broadback" wrote in message
...
The pressure output of an electric show is proportional to the wattage
of the heating element. True or false?

My daughter has a 8.5kw shower, and it is like standing under a faulty
watering can. My shower runs direct off the combi boiler, and as our
pressure is good so is the shower.

What is the highest wattage electric shower available, and how powerful
are they? I've tried a google search but many suppliers don't state the
wattage. I can find no supplier either in Stoke on Trent or Manchester
who actually demonstrate showers, a bit like buying a pig in the poke
methinks.

Any help or ideas most welcome
--
Please do not reply by Email, as all
emails to this address are automatically deleted.

The pressure at the output of a shower generally rises as the wattage of the
heating element rises, yes. Although, you would more correctly say that
(all other things being equal), the available flow-rate at a given demand
temperature is proportional to the wattage of the heating element. Don't
forget that the pressure you experience is more a factor of the shower
head, not the shower unit.


Er, try...

www.mirashowers.com

www.gainsboroughshowers.com

www.tritonshowers.co.uk

http://www.applied-energy.com/redring/products/

http://www.diy.com/diy/jsp/bq/catego....jsp?CATID=236

http://www.focusdiy.co.uk/icat/c110401

http://www.screwfix.com/

They all tell you what the wattage is...

The biggest electric shower you can get is 10.8kW, because 240 Volts x 45
Amps = 10,800 Watts, and a 45Amp fuse/MCB is the biggest size you would put
in a domestic-type consumer unit.

HTH

Smudger





We had a triton one like that, burnt up its microswitches and was no end
of bother, then threw that and the other heap of cack out, and put two
pumped Mira event units in, and perfeck showers ever since, and about
the best thing I've done he-))
--
Tony Sayer

We had a triton one like that, burnt up its microswitches and was no end
of bother, then threw that and the other heap of cack out, and put two
pumped Mira event units in, and perfeck showers ever since, and about
the best thing I've done he-))

Hey, I didn't say I thought Triton was any good ;-)

I personally don't think Gainsborough is much cop either.

Must admit, I hit the Mira site first because it would be my first choice.

Smudger

On Sun, 8 Aug 2004 19:57:22 +0100, "Smudger" smudger@here strung
together this:

The biggest electric shower you can get is 10.8kW, because 240 Volts x 45
Amps = 10,800 Watts, and a 45Amp fuse/MCB is the biggest size you would put
in a domestic-type consumer unit.

Technically not, if the circuit current is 45A then you need a 50A
fuse/MCB. And the shower manufacturers didn't stop at 10.8KW just
because "45A is a fairly big CPD so we'll stop there"
--

SJW
A.C.S. Ltd

"Lurch" wrote in message
...
On Sun, 8 Aug 2004 19:57:22 +0100, "Smudger" smudger@here strung
together this:

The biggest electric shower you can get is 10.8kW, because 240 Volts x 45
Amps = 10,800 Watts, and a 45Amp fuse/MCB is the biggest size you would
put
in a domestic-type consumer unit.

Technically not, if the circuit current is 45A then you need a 50A
fuse/MCB.

Why so?

And the shower manufacturers didn't stop at 10.8KW just
because "45A is a fairly big CPD so we'll stop there"
--

SJW
A.C.S. Ltd

On Sun, 8 Aug 2004 23:13:48 +0100, "Smudger" smudger@here strung
together this:

Why so?

Because running the circuit smack bang on it's rated current means
that the MCB\fuse will overheat and/or keep tripping\blowing all the
time. You always use the next highest CPD available, if you have a
circuit current of 14A you use a 16A CPD, if the circuit current is
16A you use a 20A CPD.
--

SJW
A.C.S. Ltd

"Lurch" wrote in message
news
On Sun, 8 Aug 2004 23:13:48 +0100, "Smudger" smudger@here strung
together this:

Why so?

Because running the circuit smack bang on it's rated current means
that the MCB\fuse will overheat and/or keep tripping\blowing all the
time. You always use the next highest CPD available, if you have a
circuit current of 14A you use a 16A CPD, if the circuit current is
16A you use a 20A CPD.
--

Yeah, but your shower would have to be on a very short piece of wet string
to be pulling its rated current anyway ;-)

Smudger