New Shower

[AJB1]

I have just swapped the shower trip switch with the cooker trip switch, crossed my fingers and switched on the shower--20mins later the showers still hot.
Next I test the cooker, switch on the oven and all 4 rings, after 2mins it trips out. Hopefully it won't trip out with just the oven on, otherwise no sunday lunch, or I could swap the switches back.
So, Great. I now know what the problem is and all I have to do is replace the faulty trip.
I think I'll probably replace both trip switches anyway to make sure the problem doesn't re-occur.

Thanks for your help everyone
Best Regards
Andrew

 

[Steve]

What makes you think the trip switch is faulty? Your cooker circuit may well draw more than 40A with all the burners on, if you have a large oven. Add up the ratings and find out before you buy a new breaker.

Many cooker circuits are underrated anyway - when do you ever use everything at once? It may be fine as is if the breaker is not faulty.

 

[Adam_151]

What makes you think the trip switch is faulty?

It tripped when it shouldn't have on the shower, now when they are swapped, its the cooker with the problem, sounds like a faulty mcb to me

Your cooker circuit may well draw more than 40A with all the burners on, if you have a large oven. Add up the ratings and find out before you buy a new breaker.

Very unlikely to trip a 40A breaker in 2 minutes unless its a huge cooker

Many cooker circuits are underrated anyway - when do you ever use everything at once? It may be fine as is if the breaker is not faulty.

This one sounds about right for a standard size domestic cooker

 

[AJB1]

What makes you think the trip switch is faulty?

It tripped when it shouldn't have on the shower, now when they are swapped, its the cooker with the problem, sounds like a faulty mcb to me

Thankyou Adam

Your cooker circuit may well draw more than 40A with all the burners on, if you have a large oven. Add up the ratings and find out before you buy a new breaker.

Very unlikely to trip a 40A breaker in 2 minutes unless its a huge cooker

Its not a huge cooker, I just put all the rings and oven on to pressurize the trip into tripping. If I had just put one ring on then it would have taken ages to trip or not tripped at all, leaving me still not knowing the problem.

Many cooker circuits are underrated anyway - when do you ever use everything at once? It may be fine as is if the breaker is not faulty.

This one sounds about right for a standard size domestic cooker

I have used the cooker since this morning, cooked my lunch ok and we have just had piazza for supper. I shall still however try and find a reasonbly priced breaker supplier, at the mo its about £12 delivered.
I shall let you know of any more developemnets.

By the way, After doing some considerable searching I came across another forum where some fella was trying to fit a 10.8kW shower but had an old Crabtree CU with a 40A max trip. He phoned Crabtree and they told him to just use the 40A trip. He has done this and the shower has been working fine for some time. What do you think of that. Perhaps I should of got a 10.8kW shower
Regards
Andrew

 

[Adam_151]

By the way, After doing some considerable searching I came across another forum where some fella was trying to fit a 10.8kW shower but had an old Crabtree CU with a 40A max trip. He phoned Crabtree and they told him to just use the 40A trip. He has done this and the shower has been working fine for some time. What do you think of that. Perhaps I should of got a 10.8kW shower

That circuit would be bad design, but I'd be very supprised if it ever trips out though

 

[BenStiller]

Amongst other things, that's what you get for buying a gainsborough shower.

I fit a lot of showers - at least 3 a month, and over the past year I have fitted, amongst others 5 gainsborough showers.

Of the 5 gainsborough showers 4 of them have been faulty.

You may need to change down to an 9kw to lessen load.

I actually fit 3or4 showers a week, and the first thing i tell my cutomers is buy any shower you like, any rating you like, any colour you like....but under no circumstances by a gainsbourough....to some them up in one word SH*TE

 

[AJB1]

but under no circumstances by a gainsbourough....to some them up in one word SH*TE

Everyone to their own I suppose Ben
I've had nothing but good experiences with them and hopefully it won't change now