logo elektroda
logo elektroda
X
logo elektroda

4kw in the block - is this power allocation enough?

krzysztof130390 15660 11
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 15394874
    krzysztof130390
    Level 8  
    Hello.
    I have a question.
    I bought a flat in a block of flats with a single-phase installation and a connection power of 4kW.
    I want to buy a built-in oven with a capacity of approx. 3.65kW.
    My question is will the oven use all the power? I will be able to use the oven, microwave and kettle at the same time without crashes fuses?

    Here's something about "kicking" fuses: https://www.elektroda.pl/rtvforum/topic2979092.html //kozi966
  • ADVERTISEMENT
  • #2 15394896
    elpapiotr
    Electrician specialist
    There can be only one answer - no!
  • #3 15394965
    CYRUS2
    Level 43  
    krzysztof130390 wrote:
    I bought a flat in a block with a single-phase installation and a connection power of 4kW.
    The question is what is the pre-meter fuse.
    I suppose 20A t0 4.6kW. There is not much power left after the oven.
    The oven + kettle will handle it. But not much else.
    Apply for more power on 1-phase so that the pre-meter fuse is 25A.
    25A is 5750W, short-term 30A is 6900W.
    Changing the power allocation - it's just a replacement of the metering protection.
    Provided, of course, that your installation is in good condition.
  • ADVERTISEMENT
  • #4 15395017
    krzysztof130390
    Level 8  
    And such a power change is enough for me to use several. devices or maybe look for an oven with less power?
  • #5 15395045
    Anonymous
    Anonymous  
  • #6 15395174
    Krzysztof Reszka
    Moderator of Electrical engineering
    I wouldn't be so quick to increase the value of the counter protection. Because the author of the topic may misunderstand that perhaps his aluminum installation in the apartment will withstand his new devices. Our topic author should provide data on his installation in the apartment.
  • #7 15397817
    Anonymous
    Anonymous  
  • ADVERTISEMENT
  • #8 15397884
    mawerix123
    Level 39  
    jaszto wrote:
    The oven can take full power only when heating up. To maintain the temperature during baking, the power will be reduced by at least half.


    Is it some kind of smart oven or heater itself :?: It's the same with the washing machine, if we pour hot water, it will also heat less or maybe heat it up with full power for a shorter time :?:
  • #9 15397995
    lenio3
    Level 11  
    1. the value of the connection power is basically not a measure of the real power that can be taken from the network (you have 4 kW in your papers and in order to continuously achieve this power value, you need to use pre-meter protection with a value of at least 20 A, which in fact results in the possibility of consumption of calculated mathematically a power of 4.6 kW, but in fact, for utility reasons, you probably have a protection installed with a value of 25 A (5750 kW).
    therefore, the value of the pre-meter protection, which can be used when calculating the available power, is important
    2. temporarily, it is possible to physically consume more power than it results from the mathematical product of the current value of the pre-meter protection and the voltage value, and it is possible to operate a microwave oven (700W), kettle (2200W) and dishwasher (2200W) powered from one circuit protected by a B16 overcurrent circuit breaker for a limited time that will not trip the overcurrent protection
  • #10 15398205
    Anonymous
    Anonymous  
  • ADVERTISEMENT
  • #11 15406825
    krzysztof130390
    Level 8  
    The case looks like this. The apartment has a copper installation with a cross-section of 1.5 cm. The wire from the fuses in the apartment to the fuses in the cage in the block is quite thick but aluminum. There are three b16 fuses in the house. Maybe add one and run the cable only under the oven?
  • #12 15407066
    elpapiotr
    Electrician specialist
    Or maybe finally call an electrician, let him decide on the spot?

Topic summary

The discussion revolves around the adequacy of a 4kW power allocation in a flat with a single-phase installation, particularly concerning the simultaneous use of a built-in oven (3.65kW), microwave, and kettle. Responses indicate that while the oven can draw full power during heating, it will reduce power consumption during operation. Users suggest that increasing the pre-meter fuse to 25A or 32A would allow for safer simultaneous use of multiple devices. Concerns about the existing electrical installation's capacity, particularly with aluminum wiring, are raised, emphasizing the need for an electrician's assessment. The consensus leans towards increasing power allocation rather than seeking lower-powered appliances.
Summary generated by the language model.
ADVERTISEMENT