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Thread: Converting from single phase to 3 phase

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    Smile Converting from single phase to 3 phase

    I managed to find a premises to start a butchery business, but has a single phase connection, now the landlord needs to know how many ampage is required for the 3 phase for a standard coldroom 2.4 x 2.4 x 2.4 and about
    6 to 8 appliances.

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    Platinum Member AmithS's Avatar
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    The best would be to speak to your suppliers of the equipment and cold room to provide you with the power \ amperage requirements and add a buffer in (not sure what would be a safe buffer - im sure an electrician can help with that).

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    Gold Member Sparks's Avatar
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    That will not be sufficient. You need to make a list of all the appliances you intend to have there including lights. Get the wattages from your suppliers and from that it can be calculated what you require.

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    Red face

    Quote Originally Posted by Singhms View Post
    The best would be to speak to your suppliers of the equipment and cold room to provide you with the power \ amperage requirements and add a buffer in (not sure what would be a safe buffer - im sure an electrician can help with that).
    Hi, Good Morning, thanks for the feedback

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    Hi Sparks, thank for the feedback, appreciated

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    Gold Member Sparks's Avatar
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    You are welcome. Be sure to take future additions into consideration too.

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    Diamond Member AndyD's Avatar
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    The physical size of the coldroom doesn't accurately determine its power requirements, you need the details of the condensing unit or even better you need to actually measure the current draw whilst it's operating. Refrigeration units can have wildly varying electrical loads depending on the ambient air temperature it's operating in. A fridge unit with a blocked condensor for example can easily draw 30% higher running current than when it's clean. Also when it's blocked it can also consume nearly double the power (units of electricity) to do the same refrigeration work than when it's clean. Same goes if the unit is under condensing for some other reason like poor design.

    If you have equipment/appliances that only run intermittently you should be able to apply sensible diversity factors to the supply. If you just add up the current requirements for all the individual loads you're likely to end up paying for a supply that's much larger than you actually require because they're never all going to run at the same time.

    Get a competent electrician to help you decide your supply requirements, it could save you a lot of unnecessary spending.
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