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Question about metering solutions.

whjohnson

Am looking for a quick and cheap solution to a requirement to provide metering for a single appliance, in this case a dairy fridge/chiller for a farmer.

The refrigeration unit is on a 13A plug and socket. and I thing the max draw when the compressor kicks in is only around 1.5A.

The guy wishes to 'rent out' the unit for a third party to use and he needs to  know how much to charge for it's electricity consumption.

What would be the easiest solution to this? Leave the existing socket outlet alone and just insert some kind of meter in line with the appliance flex? (If such an item exists)

Or just insert a meter between the supply and the socket outlet concerned. Note: metering is not possible from the consumer unit end.

A 100A meter seems like overkill for what is actually needed.

Comments welcome.

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  • 0

    I would use a conventional KWH meter as used on a domestic supply. Used mechanical meters or new digital electricity meters are available on fleabay.

    Replace the existing socket outlet with a 13 amp fused connection unit. From fused connection unit into the KWH meter. Then from the meter and into a single non standard socket outlet such as a 15 amp pin socket or a 16 amp ceeform type.

    Avoid a standard type 13 amp plug and socket for the metered supply due to risk of misuse, or suspicion of misuse. A non standard MK 13 amp socket could be used, in which case the earlier suggested upstream fused connection is not needed.

    Double check that the ENTIRE consumption of the chiller is supplied via the 13 amp plug. Some walk in cold rooms have separate supplies for different components.

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  • 0

    I would use a conventional KWH meter as used on a domestic supply. Used mechanical meters or new digital electricity meters are available on fleabay.

    Replace the existing socket outlet with a 13 amp fused connection unit. From fused connection unit into the KWH meter. Then from the meter and into a single non standard socket outlet such as a 15 amp pin socket or a 16 amp ceeform type.

    Avoid a standard type 13 amp plug and socket for the metered supply due to risk of misuse, or suspicion of misuse. A non standard MK 13 amp socket could be used, in which case the earlier suggested upstream fused connection is not needed.

    Double check that the ENTIRE consumption of the chiller is supplied via the 13 amp plug. Some walk in cold rooms have separate supplies for different components.

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