This question is regarding Mira Supreme - Shower Spares

Mira 8-4 supreme

Need to change this shower,. What is the highest kw shower can I use without changing the wiring
Asked 6 years ago by Richard
Fitting a more powerful shower to the existing wiring.

If your existing shower was installed with 6mm wiring (as it should have been) then fitting another shower (even up to one of the 10kw units) to the existing wiring should be no problem, depending on the length of the run off cable and how the cable is installed.

Here is a table that allows you to work out what you can do with the existing wiring, make sure you fill it in accurately as this can make a large difference to the eventual calculation.

www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html

You may also have to change the fuse

Up to 8.5kw 35 Amp fuse

Up to 9.5kw 40 Amp Fuse

Up to 10.5kw 45 Amp Fuse

If you are even in the slightest unsure about any of the above then please contact an electrician.

Answered 6 years ago by Barrie Seabright

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