Author Topic: Why cant I use extension lead  (Read 896 times)

Offline Calverley Lad

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Re: Why cant I use extension lead
« Reply #18 on: Friday 17 July 20 19:49 BST (UK) »
As a rule of thumb: Current used is equal to wattage/voltage.
So that equals 4amps per kilowatt of power. [1000watts divided by 250volts]
[So fuses are available in 2amp -5amp - 10amp and 13amp]
Reading lamp requires 2amp,kettle (2Kw) 10amp and heater (3Kw) 13amp.
As simple as I can make it without going technical on actual fuse rating spec.
 Brian
Yewdall/Yewdell/Youdall -Yorkshire

Offline VICTORIA

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Re: Why cant I use extension lead
« Reply #19 on: Sunday 19 July 20 07:54 BST (UK) »
Thanks everyone for useful advice and help.
Victoria
COLBECK,WHITEHAVEN CUMBERLAND
COLEBECK,HOPE,MILLER,LIVERPOOL
SCHAMBERG,MEMMEL PRUSSIA
ROCHE,ROACH,MAHER,FOY IRELAND
SANDFORD.TYNAN, LIVERPOOL.
HUBBARD,TAYLOR KENT.
HOPE NORTHUMBERLAND
SANDFORD NEWCASTLE/UPON/TYNE.



LANCASTER,GOWLAND,NORTHUMBERLAND
FOY, ROSCOMMON IRELAND,LIVERPOOL.
SMITH,HAMPSHIRE, & LIVERPOOL
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Offline Nick_Ips

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Re: Why cant I use extension lead
« Reply #20 on: Monday 20 July 20 16:51 BST (UK) »
Which model is it.
If it is the Indesit IFW6330WHUK
current consumption is 0.88KwH so 880 watts
So amps equate to 880w divided by uk voltage nominally 240 equals 3.66 amps.
So 13 amps seems a little overkill for something like that.

That might be due to a flaw in the calculation you've used.

0.88KWh is the energy consumption used for energy efficiency comparison purposes. It represents the average consumption.

For a fixed rate of consumption (e.g. a lightbulb) the calculation you've done would be valid. But appliances like ovens and washing machines have variable rates of consumption as the heating elements and/or motors switch on and off.

The average consumption over an hour for an appliance like an oven will be significantly lower than the peak rate of consumption (because the heating elements won't be on constantly).

The only safe way of finding the correct peak power (/current) rating is to check the figure from the manufacturer's data.

I can't see that figure quoted anywhere on online sources, but it should be stated on a label on the appliance (often somewhere around the door area on an oven). Have a look there Victoria

So only a figure for Amps (A) or Watts (W) should be used for max power calculations - the KWh figure might be based on a whole range of assumptions about typical use and/or selected programmes.


Offline VICTORIA

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Re: Why cant I use extension lead
« Reply #21 on: Friday 24 July 20 08:53 BST (UK) »
Which model is it.
If it is the Indesit IFW6330WHUK
current consumption is 0.88KwH so 880 watts
So amps equate to 880w divided by uk voltage nominally 240 equals 3.66 amps.
So 13 amps seems a little overkill for something like that.

That might be due to a flaw in the calculation you've used.

0.88KWh is the energy consumption used for energy efficiency comparison purposes. It represents the average consumption.

For a fixed rate of consumption (e.g. a lightbulb) the calculation you've done would be valid. But appliances like ovens and washing machines have variable rates of consumption as the heating elements and/or motors switch on and off.

The average consumption over an hour for an appliance like an oven will be significantly lower than the peak rate of consumption (because the heating elements won't be on constantly).

The only safe way of finding the correct peak power (/current) rating is to check the figure from the manufacturer's data.

I can't see that figure quoted anywhere on online sources, but it should be stated on a label on the appliance (often somewhere around the door area on an oven). Have a look there Victoria

So only a figure for Amps (A) or Watts (W) should be used for max power calculations - the KWh figure might be based on a whole range of assumptions about typical use and/or selected programmes.
Thank You, much obliged will have a look.
COLBECK,WHITEHAVEN CUMBERLAND
COLEBECK,HOPE,MILLER,LIVERPOOL
SCHAMBERG,MEMMEL PRUSSIA
ROCHE,ROACH,MAHER,FOY IRELAND
SANDFORD.TYNAN, LIVERPOOL.
HUBBARD,TAYLOR KENT.
HOPE NORTHUMBERLAND
SANDFORD NEWCASTLE/UPON/TYNE.



LANCASTER,GOWLAND,NORTHUMBERLAND
FOY, ROSCOMMON IRELAND,LIVERPOOL.
SMITH,HAMPSHIRE, & LIVERPOOL
SEALES SURREY CRADDOCK,HAMPSHIRE