Shower keeps tripping the fusebox

[JohnW2]

You probably wouldn't like full mains flow and pressure pointed at you - i.e. a hose pipe.

Quite so - and you might not even be all that keen on have 'full flow pointed at you' if it were under 'gravity pressure' from a loft tank. This is why, contrary to what a lot of people seem to think, pressure is really not the most important factor.

Kind Regards, John

 

[ban-all-sheds]

Eventually the cost of running the shower off the combi will outweigh the cost of not running it off the combi.

AAF?

 

[aptsys]

You still could. Your showers would then cost you one third of what you are paying for electric ones.

No it wouldn't

 

[batesy2000]

The Crabtree Shower Switch
Not sure if these pics will shine any light

 

[winston1]

No it wouldn't

Why? Electricity is 1/3 the cost of gas.

 

[flameport]

Electricity is 1/3 the cost of gas.

Combi boiler is 3x more powerful than an electric shower.

 

[sparkwright]

The Crabtree Shower Switch
Not sure if these pics will shine any light

View attachment 160138 View attachment 160139

Nothing obviously wrong there that should cause a short. That is a very good pull switch to have actually - they don't wear out like all the others do.

Have you inspected the condition of the cable in the loft space yet?

 

[batesy2000]

Going up there today. Will report back

 

[batesy2000]

Just been up and the cabling to me looks sound. Checked it all the way from shower to isolator to supply cable. No kinks, breaks, scorch marks. I'm at a loss. Maybe it is tje fuse box. Maybe the cable from shower to isolator needs replacing. Looks like i need the electrician to return

 

[batesy2000]

Just had a thought. I checked the cable by looking at it, I'm definitely no expert as you all know.
The shower used to trip a lot, could this have damaged the cable in a way I could not see?
The only positive to come from this is the cabling is easily accessible to replace if necessary.

 

[EFLImpudence]

Why? Electricity is 1/3 the cost of gas.

 

[EFLImpudence]

Just had a thought. I checked the cable by looking at it, I'm definitely no expert as you all know.
The shower used to trip a lot, could this have damaged the cable in a way I could not see?

Not unless cable is too small, then it might become damaged.

The shower doesn't trip. The MCB does; it might be faulty.

I might have missed it but have you ruled out a faulty shower?

 

[batesy2000]

Faulty shower was ruled out at it was tested by electrician and was brand new too.
My consumer unit is very old so my next thought is either the 40A MCB is iffy or the whole unit is. It's very old - can't see anything similar on the internet so probably can't get a replacement MCB.
The strange thing is how the replacing the isolator switch was ok for about 3 weeks and now it's back to square one which is why I thought maybe the cable from the shower to the isolator switch is the issue.
Everything was ok before we had central heating installed.