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- 27 Feb 2004
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Be advised first you need to ascertain how much current you are drawing from the consumer unit worst possible case
After this then and only then can you decide on the maximum power of your shower unit should the consumer unit have sufficient power spare
You need to take the power measurement of all isolators and add them together to work this out I.E (i1+i2+i3....) this will give you maximum power used at full peak in the consumer box in amps
Next take the maximum power rating of the consumer box normal household is 60Amp on rare occasions this may rise to 80amp
Subtract your previous calculation from this measurement
You now have available power left
From this work your way from a 2kw shower unit upwards work out the current
(Power In kilowatts*1000)/240 = amps
in this case the answer would be 8.3 amps
If this doesent exceed the maximum power rating of the box your ok to use that unit DO NOT EXCEED THE MAXIMUM RATING OF THE CONSUMER BOX
This will also determine the size of cable required and also the maximum rating of your mcd unit
If you dont follow these instructions you will land up with a bl**dy fire on your hands with serious consequences possible life loss and a complete rewire of the house with The electrics Bourd on your case yes thousands of pounds worth of damages
You have been warned
After this then and only then can you decide on the maximum power of your shower unit should the consumer unit have sufficient power spare
You need to take the power measurement of all isolators and add them together to work this out I.E (i1+i2+i3....) this will give you maximum power used at full peak in the consumer box in amps
Next take the maximum power rating of the consumer box normal household is 60Amp on rare occasions this may rise to 80amp
Subtract your previous calculation from this measurement
You now have available power left
From this work your way from a 2kw shower unit upwards work out the current
(Power In kilowatts*1000)/240 = amps
in this case the answer would be 8.3 amps
If this doesent exceed the maximum power rating of the box your ok to use that unit DO NOT EXCEED THE MAXIMUM RATING OF THE CONSUMER BOX
This will also determine the size of cable required and also the maximum rating of your mcd unit
If you dont follow these instructions you will land up with a bl**dy fire on your hands with serious consequences possible life loss and a complete rewire of the house with The electrics Bourd on your case yes thousands of pounds worth of damages
You have been warned