hiya new to this but needing help as my electrician has let me down.......

[IQ Electrical]

Sounds about right!

 

[DaveyD]

Anyway, I am going to have a stab at being Liet Columbo

Brilliant! You should have started with 'There are a couple of loose ends I'd like to tie up. Nothing important you understand.'

 

[millwall ken]

brilliant! you should have started with 'there are a couple of loose ends i'd like to tie up. Nothing important you understand.'

lol.........

 

[Kamikaze]

Fair comment on the fault issue being the subject

Anyway, I am going to have a stab at being Liet Columbo

Well, seing as its a fixed load and there didn't appear to be mention of the overcurrent doing its bit,the cable is rated for the shower,its not too long a distance, not covered in itchy stuff and not burnt or overheated along its length.it would be reasonable to suspect that a poor terminal connection was made, and when the replacement was put into use,they re used the poor conductors for connection again, consequence, switch burns out once more
New switch fitted,conductors stripped back for cool copper,terminals tight and long may it live

I suspect the question could be,did she just fit a new switch (previously) to the burnt copper cores

Well done Sherlock Ohms,
Impressive...most impressive! I have underestimated the power of your force. I have seen the future, and I'm going to make it into bed now....lol

 

[SirKit Breaker]

for what it is worth, i always tell my clients, with regard to shower switches, that the switch is an isolator and best left i n the on position. turn the shower on and off with the shower controls. each time the switch is operated with a load on, it will arc, causing premature failure.

Like wise. I also whenever possible fit a 100a DP isolator on occasions where they dont or wont have an unsightly pullcord or red switch on show. When the isolator is fitted in airing cupboards etc.

 

[Ponty Massive]

Des I'm with you. The spark she had in has solved the problem...end of!!! You see these programs with Matt Alright about tradesmen ripping people off, there's nothing saying this guy could have taken her to the cleaners if he'd wanted telling her all sorts of stories, instead an honest tradesman come's in and sorts the problem out.

 

[SimpleSimon]

Again I wasn't commenting on the sparks integrity or willingness to do the job, just the nature of the problem.
But looks like you've came out with a logical explanation Des. 

 

[mogga]

IMO she must have got what she vues as value for money as I recon Carol would have been on forum askin if she had been ripped off if she thought she was

 

[John Bunning]

my take on it is originals s/w was 20 a d/pole isolator .this is to small [single box] for a 7.5kw shower. will over heat with time. the sparks has fitted [large double box] 45a d/pole isoator job done ?