STC1000 - Will heat-pad power induce a current in the sensor?

[mr_wibble]

I'm wiring up my chest freezer with an STC-1000 / STC1000. Cooling is no problem, but I also want to wire in a heat-pad for next winter.

Here's a question for your sparky/elec-eng knowledge -

If I run the cable for the heater-mat (much like this one) along the same path as the temerature probe - that is, in the 5mm diamater hole I just pushed through the insulation. Assuming it was cold enough to turn the heating-pad on, will the current running though the heat pad cord induce a current in the wires of the sensor, possibly throwing it off ?

FWIW I'm using the MashMaster NTC Sensor rather than the included sensor, 'cause it pretty and shiny.


Note I'm not asking if the heat coming from the heat-pad will effect the sensor - of course it will. I'm asking if the 230V AC current in the wires will significantly alter the reading of the sensor. I can't really test it first, because I have to cut the plug off to get the wire through the hole.

I don't want to push another hole through the insulation, because, well, it's damn scary.


EDIT: Maybe I'll just do it and test.

 

[Black n Tan]

Both my temp sensor and power cable for heat pad use the same hole through my keeper collar and I have not had an issue with my STC1000.

 

[Coalminer]

No, it won't have any effect as the induced currents caused by the active and neutral leads of the heater cancel each other out provided
they are adjacent to each other, as in a 3 core flex

Cheers

 

[NickB]

As Coalminer stated, there will be a neutral flux because of the opposition of flow in the A and N cables. Thats why you can't tong-test a 2C+E cable.... output is 0.....


Cheers

 

[mr_wibble]

Awesome.
Thanks, and now back to wiring.