Two way switching for 1960's immersion heater

[securespark]

Can anybody help with a diagram for this?

It is a circuit for a single immersion element, fed via two switches.

One just looks like a DP switch at the back, having two reds and two blacks (+ cpc's).

The second is adjacent to the tank.

It seems to have 5 connections and a pull-off isolator, which is just some brass pins mounted on a plastic plate that connect up the element when pushed home.

That switch appears to have 5 conductors.


Any clues guys? Cheers.

 

[Taylortwocities]

I've seen this in a house, a long time ago. If I remember it isn't really 2-way switching.
Its just the on/off switch is downstairs and the upstairs one is an isolator. So the supply goes to upstairs first and then the downstairs switch is enabled if the upstairs (isolator) switch is on.

No diagram but hope this is some help.

 

[ban-all-sheds]

One just looks like a DP switch at the back, having two reds and two blacks (+ cpc's).

DP isolator?

The second is adjacent to the tank.

It seems to have 5 connections and a pull-off isolator, which is just some brass pins mounted on a plastic plate that connect up the element when pushed home.

That switch appears to have 5 conductors.

Dual element SP changeover switch? i.e. 2 alternate switched lives going out, but a common N for both elements?

 

[Steve]

We had a similar arrangement - IIRC there was a timer and switch upstairs, then downstairs next to the fusebox was a switch. Both switches had to be on IIRC - perhaps it was so that the homeowner could decide which switch to use, though 2-way would have been better.

My grandma's house also has a similar arrangement still in place - though the supply comes from the downstairs ring, into a DP in the kitchen, then up to a switch in the airing cupboard - no timer, but the cylinder is also supplied from the boiler.

 

[ColJack]

no picture SS?

 

[RF Lighting]

We have 2no. DP switches in series at home.

One in the kitchen which is a functional switch, and one adjacent to the tank as an isolator.

I think it's just an old way of doing things to save traipsing upstairs to put the hot water on back in t'day when the immersion was originally the only source of hot water in the house.

 

[ColJack]

nan's house is the same..

though it's updated now by BG.. for some obscure reason they've fitted an RCD-FCU to feed the immersion in place of the old FCU..

 

[RF Lighting]

How odd

 

[securespark]

no picture SS?

I'll get if I go back...