Low voltage to shower

twbenn · 2026-02-07T15:12:38+0000

The other week my triton shower kicked the bucket. I've replaced the MCB and bought a whole new shower unit, after replacing the MCB and fitting the new shower the voltage was only showing around 50v but used to run at 230v like normal before my old died.

Does anyone have any advice as to what it could possibly be?
Thank you

CountryFan · 2026-02-07T15:41:38+0000

Check your wiring for a start, eg terminated correctly? Screwed down on insulation?

endecotp · 2026-02-07T16:11:51+0000

twbenn said:
The other week my triton shower kicked the bucket. I've replaced the MCB

Why have you replaced the MCB?

twbenn said:
and bought a whole new shower unit, after replacing the MCB and fitting the new shower the voltage was only showing around 50v

What exactly are you measuring, and how?

twbenn · 2026-02-07T17:08:44+0000

Had a sparky out and he reckoned either the MCB or the pump in the shower was the fault, I wanted a new shower anyway and the MCB was only a few quid to swap so it wasn't the end of the world

pete01 · 2026-02-07T17:13:25+0000

50v between live and neutral or between live and earth?

twbenn · 2026-02-07T17:14:50+0000

pete01 said:
50v between live and neutral or between live and earth?

Live and neutral

pete01 · 2026-02-07T17:19:13+0000

twbenn said:
Live and neutral

Ok, you need someone to investigate and test the circuit, obviously

Check in the pull cord the neutral might be burnt out maybe....

Could be a loose or lost neutral, but the shower still works? Strange.

terryplumb · 2026-02-07T17:21:15+0000

Exactly which model shower do you have ,and where are you taking the voltage readings ,at the shower or ,
it's isolator ?

Echo the husky · 2026-02-07T17:28:19+0000

twbenn said:
Had a sparky out and he reckoned either the MCB or the pump in the shower was the fault, I wanted a new shower anyway and the MCB was only a few quid to swap so it wasn't the end of the world

Perhaps you should have had a better sparky out... There is no reason the fault could not have been narrowed down. MCB or pump sounds like clueless guesswork to me.

endecotp · 2026-02-07T17:29:29+0000

Hang on... is the shower now working, or not?

twbenn · 2026-02-07T17:56:03+0000

endecotp said:
Hang on... is the shower now working, or not?

The shower has power but not enough voltage to actually get it to work properly

twbenn · 2026-02-07T17:56:35+0000

Echo the husky said:
Perhaps you should have had a better sparky out... There is no reason the fault could not have been narrowed down. MCB or pump sounds like clueless guesswork to me.

Aye you're not wrong

pete01 · 2026-02-07T17:57:30+0000

twbenn said:
The shower has power but not enough voltage to actually get it to work properly

Check the pull cord, thank me later

endecotp · 2026-02-07T17:57:46+0000

endecotp said:
What exactly are you measuring, and how?

twbenn · 2026-02-07T17:57:53+0000

terryplumb said:
Exactly which model shower do you have ,and where are you taking the voltage readings ,at the shower or ,
it's isolator ?

triton aspirante 8.5kw electric shower - brushed steel asp08brstl

Taking the readings at the shower mains inside the unit

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Low voltage to shower

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