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    Electric shower upgrade 8.5kW to 9.8kW

    Electricians

    I would like to replace my current Triton T80si pumped (8.5kW) with a Mira Elite SE (9.8kW). The current Triton shower wiring seems to be 6mm (tbc) on a 40A MCB (30 mA protected).
    I need to know if the Mira shower can be installed and if any of the electric setup needs work.

    Asked by Mathilde on 20th Jun 2021
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    Best Answer

    GGE and Electrical

    "Unlikely you haven't mentioned how long the cable is from shower to dB and also how it's been installed ie inside a wall with insulation or clipped direct in between the joist I have worked out that in a cable for example 4 meteres long you would need 10mm and also would have to use a bigger breaker"

    Answered on 22nd Jun 2021 - Member since Apr 2021 - report
    K.Barrie Electrical

    "Hi, your 9.8kw shower would demand 42 amp.
    The existing 6mm cable is not rated to carrying that amount of current. Thus the minimum would be 10mm cable. ( this is based on the average installation, not knowing length of cable,, installation method, ie c,d, 101 etc )"

    Answered on 22nd Jun 2021 - Member since Jan 2020 - report
    uk enterprises

    "You will need to upgrade shower wiring to 10mm this is not cheap as the copper price in the last month has doubled."

    Answered on 22nd Jun 2021 - Member since Mar 2019 - report
    Stacey electrical Installation services

    "The cable would glow than burn out , generally 10mm cable for 9.8kw ,so can you replace like for like,"

    Answered on 22nd Jun 2021 - Member since Jun 2019 - report
    MB Electrical

    "Hi, a 9.8kW shower would require a minimum of 10mm cable supplying it, with a 45A breaker from the consumer unit. Hope this helps."

    Answered on 22nd Jun 2021 - Member since May 2021 - report
    MAG Electrical Services Ltd

    "It depends how the cable has been run and the distance."

    Answered on 22nd Jun 2021 - Member since Apr 2020 - report
    A.S Electrical

    "10mm cable would be ideal, as 6.00mm would over heat, depending on distance from Consumer unit, safe routing and cable distance would determine size of circuit breaker."

    Answered on 22nd Jun 2021 - Member since May 2019 - report
    Elf Electrical

    "The cable (possibly 10mm needed) and MCB (possibly 50A needed) will both need upgrading. The information that will give you the definitive answer can be found in the accompanying literature with the new shower."

    Answered on 22nd Jun 2021 - Member since Feb 2021 - report
    ipmenterprisesltd

    "It has to be 45 to 50 amp breaker on 10 mm twin and earth cable supply"

    Answered on 22nd Jun 2021 - Member since Jan 2021 - report
    OurAmps Electrical

    "You would need to upgrade the shower cable to a 10mm cable minimum 16mm would be better and also upgrade the breaker to a 45A or 50A MCB"

    Answered on 22nd Jun 2021 - Member since Oct 2020 - report

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