Electric Shower Installation
Electric shower installation on a properly rated and protected supply — not just swapped onto whatever's already there.
What a shower installation actually involves
The circuit is sized for the shower's rating, with correct RCD protection and correctly positioned isolation switching. A shower is not something to spur off whatever supply happens to be closest.
Bathrooms are a "special location" under the wiring rules, so zone compliance is part of the installation rather than an afterthought — that covers where the unit and the isolation switch can go.
Upgrading to a more powerful shower on old wiring needs the existing circuit checked, not assumed adequate. That check happens before the work, so you know whether the supply suits the unit you have in mind.
- Dedicated circuit sized for the shower's rating
- Correct RCD protection
- Bathroom zone compliance as a special location
- Correctly positioned isolation switching
- Existing circuit checked before any power upgrade
Common questions
- Can I fit a more powerful shower on my existing wiring?
- Only if the existing circuit is checked and suits it. It isn't assumed adequate — the wiring was sized for the unit that's there, not the one you're upgrading to.
- Why does a shower need its own circuit?
- Because it needs a supply sized for its rating with its own RCD protection, rather than sharing with something else. That's what stops it being swapped onto whatever's already there.
- Are there extra rules for bathrooms?
- Yes. A bathroom is a "special location" under the wiring rules, so zone compliance and correctly positioned isolation switching are part of the job.
- How long does it take?
- It depends on the property and the existing circuit. Where the circuit is already suitable it's a more direct job; where it needs sizing or running new, that's established at the check stage before the work rather than mid-install.
Need someone today?
Describe the symptom rather than the solution and we'll tell you honestly whether it needs an emergency visit or a booked appointment. Emergency call-outs are prioritised.