dishwasher help needed please

Rabbir1

30mA is the usual rating to provide shock protection. Any less and your likely to get nuisance tripping.

espresso

totalsolutions wrote: »

espresso- you !!!!!!. Your RCD is rated at 30mA and won't save you that's 30mA going through your heart and might just take you out.

:rotfl:

You don't know much about electricity do you and it's not my consumer unit! A little knowledge is a dangerous thing, so why post on a topic that you obviously know nothing about. Read the Wiki link that you posted preciously and you may actually learn something e.g.

RCD sensitivity is expressed as the rated residual operating current, noted IΔn. Preferred values have been defined by the IEC, thus making it possible to divide RCDs into three groups according to their IΔn value.

* High sensitivity (HS): 6 – 10 – 30 mA (for direct-contact / life injury protection),
* Medium sensitivity (MS): 100 – 300 – 500 – 1000 mA (for fire protection),
* Low sensitivity (LS): 3 – 10 – 30 A (typically for protection of machines).

It should be borne in mind that nameplate rating and real trip current are not necessarily the same. For example UK 30mA RCDs must trip at an imbalance current lower than 30mA.

Only one TotalTosser posting here!

:rolleyes:

crystal9

fwor wrote: »

If you read what the OP says carefully, it doesn't seem to be a fault to earth, because typically in a domestic situation the RCD in the consumer unit covers the whole house, unless it was fitted within the last 12 months, in which case there may be 2 RCDs.

If it's a standard MCB (circuit breaker) that's tripping, it's an over-current problem. If that assumption is correct then this is quite an unusual situation, because for a power circuit, the MCB should be rated at 30A or more. The fuse in the dishwasher plug ~should~ be rated at 13A and so should blow before the MCB trips. So it could be a problem with the wiring in the plug or the wall socket.

But better to be safe than sorry - if I were the OP I would call in an electrician to test the appliance and the wiring for faults rather than take any chances.

thank you very much for your advice i have a question tho and excuse me with this as i dont really know what im talking about.
but if it was an electrical fault why hasnt anything else near to dishwasher tripped ie the kettle which is in same extension lead as dishwasher?
like i said i know nothing so dont take this the wrong way

Rabbir1

If the only time you get the fault is when the dishwasher is plugged in, then there is a fault on the machine itself.
I'm not saying you don't have a wiring fault as well (if the electrics have never been tested then you wouldn't know) but that's another problem altogether and not anything to do with the dishwasher.

Domestic wiring should be tested every ten years or change of ownership if less than ten years.

Hope that makes sense!

fwor

crystal9 wrote: »

but if it was an electrical fault why hasnt anything else near to dishwasher tripped ie the kettle which is in same extension lead as dishwasher?:D

Sorry, but in that sentence it's not obvious what you mean by "tripped". Do you mean that even when the dishwasher won't work, the kettle still does? Or do you mean that using the kettle doesn't cause the MCB to trip out (or perhaps the RCD to trip, depending on which interpretation above was right).

Incidentally, if you really do have both a high-wattage kettle ~and~ a dishwasher both plugged into one extension lead, you are probably exceeding the current capacity of the extension lead.

For example, if both kettle and dishwasher take 3kW then when both are on together they will draw approx 24 Amps, which is ~much~ higher than any normal extension lead should handle.

crystal9

Rabbir1 wrote: »

If the only time you get the fault is when the dishwasher is plugged in, then there is a fault on the machine itself.
I'm not saying you don't have a wiring fault as well (if the electrics have never been tested then you wouldn't know) but that's another problem altogether and not anything to do with the dishwasher.

Domestic wiring should be tested every ten years or change of ownership if less than ten years.

Hope that makes sense!

yes it seems that its only when we plug and turn on the dishwasher that all electric goes off so im thinking now that it is the dishwasher at fault. thank you

crystal9

fwor wrote: »

Sorry, but in that sentence it's not obvious what you mean by "tripped". Do you mean that even when the dishwasher won't work, the kettle still does? Or do you mean that using the kettle doesn't cause the MCB to trip out (or perhaps the RCD to trip, depending on which interpretation above was right).

Incidentally, if you really do have both a high-wattage kettle ~and~ a dishwasher both plugged into one extension lead, you are probably exceeding the current capacity of the extension lead.

For example, if both kettle and dishwasher take 3kW then when both are on together they will draw approx 24 Amps, which is ~much~ higher than any normal extension lead should handle.

sorry i'm not explaining right am i. i mean the kettle still works and does not make electric go but when dishwasher is turned on that makes electric trip.
not sure if the kettle is high powered its just a breville kettle the ones that light up blue when off and red when boiling. hope that makes sense now

fwor

Understood - so Rabbir1's post number 25 is spot on. It's most likely to be a fault in the dishwasher, though faulty wiring can't be ruled out.

Incidentally, you can tell if you are overloading an extension lead by adding up the total number of kilowatts of all the appliances plugged into it and multiplying by 4. The resulting number should not be greater than 13. For example if you have a 3kW kettle in use that alone takes 12 Amps. The extension lead can only safely carry another 1 Amp, which equates to 250 Watts - not much! I doubt that the dishwasher takes so little power.

It's a serious point: a significant proportion of electrical fires are caused by overloading mains sockets, adaptors and extension leads.

crystal9

fwor wrote: »

Understood - so Rabbir1's post number 25 is spot on. It's most likely to be a fault in the dishwasher, though faulty wiring can't be ruled out.

Incidentally, you can tell if you are overloading an extension lead by adding up the total number of kilowatts of all the appliances plugged into it and multiplying by 4. The resulting number should not be greater than 13. For example if you have a 3kW kettle in use that alone takes 12 Amps. The extension lead can only safely carry another 1 Amp, which equates to 250 Watts - not much! I doubt that the dishwasher takes so little power.

It's a serious point: a significant proportion of electrical fires are caused by overloading mains sockets, adaptors and extension leads.

thank you so much for that advice we are proberbly overloading the extension lead. ok will get plumber in to check washer thanks again to all that gave advice

Alison_Eardley

Hi

What was the outcome of your dishwasher/ electrics problem? The same is happening to us!!!

Thanks