32amp or 13amp appliance
- Thread starter notaplumber1
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The rating plate says 5.5 kW MAX and 240 volts.
That equates to 22.9 amps at 240 volts supply when running at maximum load.
That equates to 22.9 amps at 240 volts supply when running at maximum load.
Looking to replace it with a hotpoint ceramic hob crm641dc with spec 30amp fuse rating. Would i be correct to assume current plug set up is sufficient?
No. just because the existing set up "works" it does not prove the cable is capable of carrying 30 amps.
To be sure you need to find out what size cable is use to supply the power to the cooker connection point on the wall.
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How do i do that? Sorry for being so ignorant.
What's the protective device (fuse or circuit breaker) rated at?
If you can look at a plate saying 5.5kW and not know what current that means then please do not attempt any electrical work.
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In theory all cable should be selected to match the protective device, so if the existing fuse/MCB/RCBO is 32A then any other hob should fit. However people do not always follow the rules. I find that looking at cable it is hard to be sure unless there is some writing to say, I use crimps and try a blue if it fits then 2.5mm² then it that does not fit a yellow, if slack fit then 4mm² and if tight then 6mm² trying to measure with a micrometer does not really work.
No one said that. It would be a silly thing to do as he is in the UK where the average voltage is at least 240v. So as bernardgreen said 22.9 amps.
What is average voltage and how is it determined?
The average voltage on the UK supply network is close to zero as it is AC.
The root mean square voltage is varies from place to place and can be determined using a calibrated RMS meter.
Over to Winston
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Noooooooooooooooooooo!!!!!!!!!!!!!
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At my house for years we have had 245 volt most times when I measured, however there have been some solar panels fitted in the local area, and now 225 to 230 is more common. Average voltage may be 162.6 and the peak may be 325.2691 but for normal use we want the heating effect and for that we use 230 volt RMS.
However I see your point in that the changing of the tapping on local transformers has been slow. However solar panels have forced DNO's to adjust the local voltage or the panels would lock out on over voltage too often. So today I would say most transformers have been altered to the agreed European voltage. Although only in the last couple of years.
However the appliance shown is a 32A appliance even if we don't know if the supply is. 21.96 is over what a 20A MCB is designed to give and although you can get 25A they are rare. However reference method 100 2.5mm² is rated at 21A so there would be nothing to stop one feeding the unit with 2.5mm² cable in fact since white likely 90°C rated so over the 21A rating.
More likely 4mm² or 6mm² but until measured still unknown.
However I see your point in that the changing of the tapping on local transformers has been slow. However solar panels have forced DNO's to adjust the local voltage or the panels would lock out on over voltage too often. So today I would say most transformers have been altered to the agreed European voltage. Although only in the last couple of years.
However the appliance shown is a 32A appliance even if we don't know if the supply is. 21.96 is over what a 20A MCB is designed to give and although you can get 25A they are rare. However reference method 100 2.5mm² is rated at 21A so there would be nothing to stop one feeding the unit with 2.5mm² cable in fact since white likely 90°C rated so over the 21A rating.
More likely 4mm² or 6mm² but until measured still unknown.
I can read the part where it says 240V, so that will be the voltage at which it is a 5.5kW appliance.
So I make that 13.6A
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