Fused Spur with Alexa or Similar

David Wade

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Jul 27, 2022, 8:15:27 AM7/27/22

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Folks,
Was looking to "smart" my immersion but can't seem to find a fused spur
unit with WiFi. Does any one make one?
Dave

Tricky Dicky

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Jul 27, 2022, 8:55:31 AM7/27/22

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I have not seen a smart FSU but even if one existed it probably would be unsuitable as most immersions are rated at 15A and what FSUs exist only go up to 13A.

Richard

Tricky Dicky

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Jul 27, 2022, 9:06:53 AM7/27/22

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You could replace your existing immersion switch with something like this and achieve what you want, but being of Chinese origin you might want to investigate its safe use.

https://www.amazon.co.uk/Switch-Smart-Boiler-Wall-Touch/dp/B09P88YF2W/ref=sr_1_41?crid=1TXTFW2T90EFC&keywords=Smart+switches&qid=1658926779&sprefix=smart+switches%2Caps%2C92&sr=8-41

Richard

Theo

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Jul 27, 2022, 9:20:48 AM7/27/22

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https://www.timeguard.com/products/wifi/wi-fi-switches/fstwifitu-wi-fi-controlled-fused-spur-tuya-edition

That's in the Tuya ecosystem, so I assume uses the Tuya SmartLife app /
Alexa skill / etc. Some Tuya gear is an ESP8266 inside that can be
reflashed with alternative firmware if you don't like Tuya, but no ideas about this particular
one.

Theo

Andy Burns

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Jul 27, 2022, 9:25:25 AM7/27/22

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Theo wrote:

> David Wade wrote:
>
>> Was looking to "smart" my immersion
>

> https://www.timeguard.com/products/wifi/wi-fi-switches/fstwifitu-wi-fi-controlled-fused-spur-tuya-edition
> That's in the Tuya ecosystem

how many kW is the immersion? that will only cope with 3kW

charles

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Jul 27, 2022, 9:30:49 AM7/27/22

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In article <ca754347-a37f-48db...@googlegroups.com>,

>.Richard

All the ones TLC sell are 3kW.

--
from KT24 in Surrey, England - sent from my RISC OS 4té
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

Harry Bloomfield Esq

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Jul 27, 2022, 11:44:12 AM7/27/22

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On 27/07/2022 13:55, Tricky Dicky wrote:
> I have not seen a smart FSU but even if one existed it probably would be unsuitable as most immersions are rated at 15A and what FSUs exist only go up to 13A.

No, the standard domestic immersion is rated at 240v 3Kw, which is a
touch less than 13amp. However a 13amp plug and socket is not really
suited to long periods run at close to 13amps.

Theo

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Jul 27, 2022, 12:49:20 PM7/27/22

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I think most immersions are 3kW, but if not a contactor will boost the switching
current.

Theo

ARW

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Jul 27, 2022, 1:49:51 PM7/27/22

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That's all I have seen and fitted

ARW

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Jul 27, 2022, 2:02:54 PM7/27/22

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ie 3kW immersions not plugs and fuses

ARW

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Jul 27, 2022, 2:03:49 PM7/27/22

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Why does it need to be a FCU?

Normal installation would be via a 20A DP switch

David Wade

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Jul 27, 2022, 5:25:32 PM7/27/22

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Mine is 3Kw...

Dave

David Wade

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Jul 27, 2022, 5:34:55 PM7/27/22

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When it was installed 40 years ago it was on a 13amp plug. That was
replaced with a fused spur unit sometime in the past.

I see that this does not conform to modern practice, if it ever was
legitimate and it also needs a separate radial circuit.

Dave

Tim+

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Jul 28, 2022, 9:16:36 AM7/28/22

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Have a look at this Sonoff switch.

https://www.ebay.co.uk/itm/125424087805?

Even if you’re not interested in its power measuring capabilities I’m
pretty sure it will do what you want.

I have an older version which, like it, is rated at 16 amps. I’ve been
using mine nightly for many months with no issues and was recommended it by
others who also use it for controlling immersion heaters.

Don’t be tempted by the smaller cheaper Shelly 1 switch. Very neat, and
rated to 13 amps but there are plenty of reports of these switches not
coping will with the load for any length of time at all. The Sonoff 16 amp
switch seems much more bullet proof

Tim
--
Please don't feed the trolls

Andrew

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Jul 28, 2022, 10:29:44 AM7/28/22

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On 27/07/2022 19:03, ARW wrote:

?Smiths (Timeguard) seem to do one

https://www.timeguard.com/products/time/immersion-and-general-purpose-timeswitches/wi-fi-controlled-16a-7-day-timeswitch

Andrew

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Jul 28, 2022, 10:40:21 AM7/28/22

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And this if you really do need a fused spur with wifi

https://www.timeguard.com/products/wifi/wi-fi-switches/fstwifitu-wi-fi-controlled-fused-spur-tuya-edition

Be warned though, I bought a Timeguard 7 day electronic timer back in
2010 and randomly, every couple of days it would lose all its settings.

Once I plugged it into an ex-BT-exchange surge protector extension
socket the problem vanished and it never failed. I've never been able
to work out what nasty signal was coming through the mains at random
times make the timer have a hissy fit.

I hope their WiFi enabled products are resistant to ?mains-bourne
interference.

David Wade

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Jul 28, 2022, 1:10:54 PM7/28/22

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Thanks folks for all the suggestions. Looks like I need to re-consider
the way its fed first. Then plenty of options..

Dave