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Ovens on cooker ccts

Farmboy
In domestic kitchens, what do you think of the practice of connecting ovens to 32/40A cb cooker ccts via dual cooker connection outlet plates? For example, along with a 6kw hob, a 2.5kw oven is connected via a 1.5mm2 3 core h/r flex? One view is that it's acceptable because the flex can't be overloaded and the cb provides s/c protection for the flex, nor would it be coded on an eicr.


F
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    And if you have done a global insulation test at the main switch and the whole insulation gives a good reading with some appliances still connected and it all gives a good test result the jobs a good one.


    Two days ago I did a global insulation test lives to earth, the tumble dryer and beer fridge in the conservatory were still connected, these pulled the insulation value down to a fail. After investigation I noted on the EICR is that there is a problem due to condensation from using the tumble dryer in the conservatory with the plugs and appliances getting wet. When I unplugged the tumble dryer and beer fridge the insulation test result at the CU went up to over 500 from 0.17, I showed the tenant the pins were wet on the plugs, you could see the water that had condensed in there.


    A global test at the main switch is far more revealing and relevant than trying to break everything down to test, you just need to be a bit nifty at fault finding if you are looking for a problem and know when to stop and code it FI making the EICR unsatisfactory.


    As my lecturer said on my testing course, you are going to have to start taking the neutrals out and most electricians try to avoid doing that.


     Andy Betteridge 


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  • 0
    And if you have done a global insulation test at the main switch and the whole insulation gives a good reading with some appliances still connected and it all gives a good test result the jobs a good one.


    Two days ago I did a global insulation test lives to earth, the tumble dryer and beer fridge in the conservatory were still connected, these pulled the insulation value down to a fail. After investigation I noted on the EICR is that there is a problem due to condensation from using the tumble dryer in the conservatory with the plugs and appliances getting wet. When I unplugged the tumble dryer and beer fridge the insulation test result at the CU went up to over 500 from 0.17, I showed the tenant the pins were wet on the plugs, you could see the water that had condensed in there.


    A global test at the main switch is far more revealing and relevant than trying to break everything down to test, you just need to be a bit nifty at fault finding if you are looking for a problem and know when to stop and code it FI making the EICR unsatisfactory.


    As my lecturer said on my testing course, you are going to have to start taking the neutrals out and most electricians try to avoid doing that.


     Andy Betteridge 


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