electric shower tripping

[Davisonp]

One other test is to turn off all other circuits to ensure the shower trips the RCD on it’s own, not a combined leakage issue.

 

[neilyboy]

Wonder if the OP is charging for this?

So its a recent install, the customer bought the kit, the installer isn't returning calls, the OCPD may be too low, we don't know if the RCD or MCB are tripping.

We do know the person fault finding doesn't have the appropriate kit.

Has it ever worked?

Did the installer provide a cert?

Wonderful!

1.no, i have a pension i dont need to charge
2.ok i should have taken notice of this
3.ministry of bleeding obvious....new install tripping...course its never worked
4.of course not he's disappeared with his money
As a long time ex sparky i enjoy reading most of these threads to try and keep up but some of you guys and your replys just fill me with dismay with the sarkiness and all round General contempt you treat genuine querys. unless i

 

[Octopus]

^^ you read this forum regularly yet start a thread full of holes.... Are you real?

Your "friend" needs to report this chancer to trading standards, the employ a reputable spark with current practice, skills, expertise, and test kit

 

[neilyboy]

^^ you read this forum regularly yet start a thread full of holes.... Are you real?

Your "friend" needs to report this chancer to trading standards, the employ a reputable spark with current practice, skills, expertise, and test kit

Yes i am real
And what holes
,why do you feel the need to put friend in inverted commas

 

[Specialist]

@neilyboy: In your original post you said that you were looking for a fault on a 9.8 kW shower, that was fed via a 40a MCB & 63a rcd which trips when the shower is turned on.
You have no test equipment & decided to fault find by first bypassing the switch, then connecting the shower to the incoming mains supply. Neither of which are safe or recognised fault finding techniques, then come here & ask for help.
You were given the most probable causes by telectrix & others in the first few replies you got. The people who've taken the time to reply to you, do this job day in / out & get annoyed when people use dangerous practices to try to find a fault. So yes you will get sarcastic & contemptuous replies.
My best suggestion to you now would be to tell your friend to contact a proper electrician in, who has the correct knowledge & equipment to find and clear the fault safely.

 

[davesparks]

As an ex electrician you should surely appreciate that proper test equipment is required to find a fault such as this, and also understand that just because the shower appears to work when the RCD is removed it doesn't mean it is working correctly or safely?

 

[The Ghost]

9.8kw appliance and its 40.833333333a.

Funny I get 43a

 

[Specialist]

Funny I get 43a

Think the OP did his calc based on 240v.

 

[Wilko]

Funny I get 43a

Often manufacturers quote power used at 240V for their rated power but it should be on their instructions

 

[davesparks]

Funny I get 43a

Then presumably you've calculate s it using the wrong voltage. The power rating system of appliances are still given at 240V almost universally, many will have their 230V power rating given additionally in smaller writing.

A resistive load of 9.8kW at 240V will only be around 9kW at 230V