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electric shower problems

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Hi i'v got a electric shower to take a look at tomorrow. it's got power running to it but no hot water. has anyone got an idea what the problem is?
Many thanks for any advise.
 
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Peace!
Thought, I would post it again, hope you’ll find this interesting:

From BS 7671:2008 (Electrical Regs - 17th edition to you and me)
114 RELATIONSHIP WITH STATUTORY REGULATIONS
114.1 The Regulations are non-statutory. They may, however, be used in a court of low in evidence to claim compliance with a statutory requirements. And it goes on ……………………….

Basically, as long as you know what you are doing - you can do whatever you want (almost) but when you are end up in the court – the Regs (17th) will be used to make sure everything you’ve done is up to scratch. If you are not sure – get someone in who knows – a competent person.

From the same regs:
134 ERECTION AND INITIOAL VERIFICATION OF ELECTRICAL INSTALLATIONS. 134.1 ERECTION
134.1.1 Good workmanship by competent persons or persons under their supervision and proper materials shall be used in the erection of the electrical installations. Blah, blah, blah….

If you are doing it yourself – make sure you do it right.
Keep safe!
 
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AlexGas said:
Peace!
Thought, I would post it again, hope you’ll find this interesting:

From BS 7671:2008 (Electrical Regs - 17th edition to you and me)
114 RELATIONSHIP WITH STATUTORY REGULATIONS
114.1 The Regulations are non-statutory. They may, however, be used in a court of low in evidence to claim compliance with a statutory requirements. And it goes on ……………………….

Basically, as long as you know what you are doing - you can do whatever you want (almost) but when you are end up in the court – the Regs (17th) will be used to make sure everything you’ve done is up to scratch. If you are not sure – get someone in who knows – a competent person.

From the same regs:
134 ERECTION AND INITIOAL VERIFICATION OF ELECTRICAL INSTALLATIONS. 134.1 ERECTION
134.1.1 Good workmanship by competent persons or persons under their supervision and proper materials shall be used in the erection of the electrical installations. Blah, blah, blah….

If you are doing it yourself – make sure you do it right.
Keep safe!
Click to expand...

Like I said - Part P not required. Thank - you AlexGas
 
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alexgas said:
peace!
Thought, i would post it again, hope you’ll find this interesting:

From bs 7671:2008 (electrical regs - 17th edition to you and me)
114 relationship with statutory regulations
114.1 the regulations are non-statutory. They may, however, be used in a court of low in evidence to claim compliance with a statutory requirements. And it goes on ……………………….

Basically, as long as you know what you are doing - you can do whatever you want (almost) but when you are end up in the court – the regs (17th) will be used to make sure everything you’ve done is up to scratch. If you are not sure – get someone in who knows – a competent person.

From the same regs:
134 erection and initioal verification of electrical installations. 134.1 erection
134.1.1 good workmanship by competent persons or persons under their supervision and proper materials shall be used in the erection of the electrical installations. Blah, blah, blah….

If you are doing it yourself – make sure you do it right.
Keep safe!
Click to expand...
unless you are being payed for it
 
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lbp plg & htg said:
Lets get things into perspective here guys - shower manufacturers replace electric showers all the time, no part P and no proving of the circuit. Its like swapping a toaster.
Click to expand...
That is their standard, but no way would I or for that matter anyone I know, not fit a new shower to current safety regs.

Back in the day, consumer boxes were installed in garages and in basement cupboards etc and showers were a paltry 7kw and no better than a glorified toaster with water going through them. Consumer boxes in the 80's were smaller as there was much less electrical demand on them. Nowadays we have so many large appliances on standby and showers are far more powerful than their original counterparts. All showers must be fitted with 10mm twin and earth minimum, terminating at the consumer box with a separate RCD for safety.
 
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The thermal cut out can be gone on electric showers. Extremely common with Mira showers. Such an easy job to replace & just £11. I wouldn't throw a shower away just because it is a thermal cut out, as it is so easy to test. Live power just goes to the cut out & through it to the elements.
I saw one shower where a large plumbing firm had said the Mira shower needed replaced for £350. Just a thermal cut out from local Mira agent sorted it.
 
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....... tttttttttttt.jpg
 
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system3 said:
To take the load without overheating the cable. All showers of 8.5kw and above must be 10mm twin and earth minimum. If the cable run is a long one it should be increased to 12mm.
Click to expand...

You have got that one wrong.
It needs to be suitably sized to suit the load and how it is run.
A bit like saying a 24kw boiler needs an 22mm gas pipe. It doesn't necessarily but it does need a properly sized one.
 
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tamz said:
You have got that one wrong.
It needs to be suitably sized to suit the load and how it is run.
A bit like saying a 24kw boiler needs an 22mm gas pipe. It doesn't necessarily but it does need a properly sized one.
Click to expand...
Yes that is what I said, it should be sized to suit the load and run, and increased if the run is a long one. But 10mm is now the minimum and any M.I I've read recently states this.
 
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