Shower - Fused Connection (Ireland)

[Micheal_Ireland]

I'm carrying out some DIY in my apartment - during this process i'm replacing light switches, plug sockets, fused connection unit.

The only electrical work that I am comfortable doing is like for like - replacing existing components with the full power turned off.

The fused connection unit for the shower was wired backwards.

Old Wiring (shower was working fine)
FEED
Brown -> Neutral
Blue -> Live
Yellow\Green -> Earth

LOAD
Brown -> Neutral
Blue -> Live
Yellow\Green -> Earth

SHOWER Unit
Blue -> Neutral
Brown -> Live

New Wiring (shower breaks the fuse after a few seconds)
SUPPLY
Blue -> Neutral
Brown -> Live
Yellow\Green -> Earth

LOAD
Blue -> Neutral
Brown -> Live
Yellow\Green -> Earth

Some Questions?
Is there any logical reason for the original fused connection to be intentionally wired wrong?.
Why would this not have been a noticeable problem in the past?
Why would wiring this correctly be causing me issues?

Any advice is greatly appreciated.

 

[plugwash]

When you say "shower" do you mean a shower pump or do you mean an electrically heated shower?

 

[Micheal_Ireland]

It's the Fused Connection Unit for the Electric Shower

 

[winston1]

Fused connection units are rated max 13 amps. Even the smallest shower (6kW) take double this amount. Therefore fused connections units should not be used on a shower.

I believe (correct me if I am wrong) it is illegal for you to do this work in Ireland and that the penalties are somewhat severe.

 

[Micheal_Ireland]

Fused connection units are rated max 13 amps. Even the smallest shower (6kW) take double this amount. Therefore fused connections units should not be used on a shower.

I believe (correct me if I am wrong) it is illegal for you to do this work in Ireland and that the penalties are somewhat severe.

You are not wrong rules in ireland are very strict - nullifies your insurance and makes you ultimately responsible should any accident occur.

I've placed back the old switch but wired it correctly - some dodgy work carried out in the late 90s construction boom here.

A mate has a brother is an electrician and i've arranged for him to come and give things a look.

 

[Risteard]

All work in a bathroom (including like-for-like replacements of accessories) in the 26-Counties are Restricted Electrical Works and may only be carried out by a Registered Electrical Contractor (REC), i.e. a member of RECI/Safe Electric.

 

[Risteard]

nullifies your insurance and makes you ultimately responsible should any accident occur.

Actually, it's punishable by imprisonment (for up to three years) and heavy fines (up to €15,000).