I have recently had a bosh one touch thermostat installed however the power cable is very short and does not reach my mains socket so currently have an extension lead running it, I do not want to leave it like this and have been unsuccessful finding a white 15v 300ma longer power adapter so was just wondering if anyone can give any advice on extending this power adapter or if anyone knows where I can get a white one as it has to run down side of door frame and across skirting thank you

 

Likely such an adapter with a longer white lead would be hard to find.

An alternative is to buy some appropriate white wire and splice/solder it to the present wire to extend it.

 

Usually the power for an installed heating or cooling device is supplied by the device being controlled. What sort of device is being controlled, and also what sort of thermostat was in service and is now replaced. From what I see in the picture, the thermostat is not installed at all, it is merely hung on the wall. The installation includes connecting a control thermostat to the device being controlled.

If you are going to use an extension cable, it can be a low-voltage cable similar to the light-gage speaker connection cable sold at some audio shops. The wire size can be similar to the US wire gage #24, and the insulation suitable for "low voltage" wiring.
A serious caution is that I think that the label on the power supply indicated that it is Direct Current, so polarity matters.
But unless the control connection is wireless, the installation is by no means complete.

 

I’d look for a cable to extend the low voltage side if you don’t want an extension cord on the AC side. Something like this, but you’ll need to know the proper sizing
https://www.amazon.com/Extension-Security-Surveillance-Wireless-Standalone/dp/B07VQDJ5TX

 

Usually the power for an installed heating or cooling device is supplied by the device being controlled. What sort of device is being controlled, and also what sort of thermostat was in service and is now replaced. From what I see in the picture, the thermostat is not installed at all, it is merely hung on the wall. The installation includes connecting a control thermostat to the device being controlled.

If you are going to use an extension cable, it can be a low-voltage cable similar to the light-gage speaker connection cable sold at some audio shops. The wire size can be similar to the US wire gage #24, and the insulation suitable for "low voltage" wiring.
A serious caution is that I think that the label on the power supply indicated that it is Direct Current, so polarity matters.
But unless the control connection is wireless, the installation is by no means complete.

This is the thermostat that is fitted

 

I’d look for a cable to extend the low voltage side if you don’t want an extension cord on the AC side. Something like this, but you’ll need to know the proper sizing
https://www.amazon.com/Extension-Security-Surveillance-Wireless-Standalone/dp/B07VQDJ5TX

thank you how would I attach them? Cut the current wire and buy connectors?

 

This is the thermostat that is fitted

everything is installed and working however as you can see it’s running off an extension lead temporarily which I don’t like I would rather it be to the mains and hidden so just want to extend it
Thank you

Mod:lightened image.

 

Likely such an adapter with a longer white lead would be hard to find.

An alternative is to buy some appropriate white wire and splice/solder it to the present wire to extend it.

what would be the correct wire and could I use connectors rather than solder them?

 

Hi amy,
How long will extension lead be from the wall wart PSU to the Bosh unit?
E

 

Hi amy,
How long will extension lead be from the wall wart PSU to the Bosh unit?
E

I need at least 2/3 meters to the mains

 

Hi amy,
I assume it is the White cable as shown in this image is the one you plan to extend?
If Yes, use a cable of this type from Amazon, use simple two-way terminal blocks to join the extension.
Ensure correct polarity of the wires when connecting.

E
https://www.amazon.co.uk/electrosma...73-8da5-baa5323c7cfd&pd_rd_i=B00967RN8U&psc=1

 

Hi amy,
I assume it is the White cable as shown in this image is the one you plan to extend?
If Yes, use a cable of this type from Amazon, use simple two-way terminal blocks to join the extension.
Ensure correct polarity of the wires when connecting.

E
https://www.amazon.co.uk/electrosma...73-8da5-baa5323c7cfd&pd_rd_i=B00967RN8U&psc=1

Thank you how will I know the polarity correct when complete please?

 

Thank you how will I know the polarity correct when complete please?

Hi,
Normally, the Positive lead is considered White/Black striped.

When you cut the existing cable, cut it so that the terminal block joints can be hidden from view, if possible, this will make it look neater.

The new wire you are buying for the extension should be marked in some way to identify the wiring at both ends of the cable.
So keep the same wire ends connected at both ends of the extension in the same sense.

Do you already have the extension wire? If Yes, post an image and I can post a diagram.

E
Added a wire sample image.

 

Hello,

There is speaker cable that has two different shapes or a colorband.
https://www.google.nl/search?q=whit...BDEzLjagB-Ey&sclient=mobile-gws-wiz-img&udm=2
That way you can control the polarity.

Bertus

 

I think I misunderstood. What’s on the far end of the cable? I mean, how is it terminated? My suggestion was to add the extension there but I assumed there was a connector of some kind there.

 

I suggested the requirements for an extension cable back in post #3.
Now a bit of additional advice, which is to start at the thermostat with the extension cable and run that up to wherever you find a convenient location for a splice connection. That will look much better.
Were there other wires in the wall that tied to the thermostat??
I am asking because I see no means of the new thermostat connecting to the controlled device.

IF it is a wireless control scheme, then you do have an additional option easily available. That option is to install the thermostat at some location convenient to a mains power outlet.

The fact is that there is nothing "sacred" about the exact location if there are no wires in the wall that connected to the original thermostat. The deal is that most folks are told otherwise.

 

This is the thermostat that is fitted

How does the power cable connect to the thermostat? Barrel plug?

 

Hi,
Normally, the Positive lead is considered White/Black striped.

When you cut the existing cable, cut it so that the terminal block joints can be hidden from view, if possible, this will make it look neater.

The new wire you are buying for the extension should be marked in some way to identify the wiring at both ends of the cable.
So keep the same wire ends connected at both ends of the extension in the same sense.

Do you already have the extension wire? If Yes, post an image and I can post a diagram.

E
Added a wire sample image.

View attachment 339691View attachment 339692

Thank you so much

 

I looked at the Bosch website and it looks like their thermostats use a terminal block to accept auxiliary power when a C wire is missing from an existing installation. So the far end of that cable is indeed just wire, no plug or connector.

The only option is to splice in a section of white wire and, as noted, be careful to maintain proper polarity. It may not really matter but better to not mess around. The thermostat would accept AC and in fact expects it but DC is fine.

There are lots of ways to accomplish a splice. Do you have a soldering iron? Don’t worry if you don’t - there are options.

 

My suggestion to add the additional cable from the thermostat still holds because it will allow the splice in a more convenient location. IN ADDITION, it may be possible, even simple, to replace the entire cable from the thermostat to the furnace, or whatever it is, rather than add an installation. Looking at the photo in post #1, I see no terminals for any additional wires. So what can the original post person tell us about the installation??? What is it for??