Electronics > Projects, Designs, and Technical Stuff

connecting a light sensor to a lamp outside?

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james_s:
240V photocells are common in the US too, although not normally in the domestic market. A lot of streetlighting is 240V, and along the highways it's normally 480V although the latter would not use individual photocells.

MarkF:
I just used the colors as currently used in your picture.
I'm in the USA and don't know the standard in your country.  Follow your country standards.

Agreed with others on water safety.  Here, I would have used one that screws into a box and makes it waterproof.
Your model looks like a pole switch. But, the wires are awful short.

   

MarkF:
Revised wiring...
The "old" colors vs "new" colors seems to match the colors used in your picture except the feed wire has white instead of red.
If the old standard (black) is neutral connected to the new standard (blue), I would wire it this way.

Some else here with more knowledge in your country should verify.

You could measure the voltage between the green ground to the white and black wires to determine which is the line and which is the neutral. 

   

james_s:
I don't know how it could be made any less confusing, the photocontrol is a simple switch with the addition of a neutral wire since it needs power itself. Black and red go to the relay inside the thing and these connect between the live wire from the wall and the live input wire to the lamp. The white wire is neutral and joins the neutral wire from the wall where it connects to the neutral to the lamp. Since you also know what color wires in the existing structure are for neutral and live, you have all the information you need.

If this still does not make sense then I highly encourage you to hire a licensed electrician, or at least find a handy person who understands electrical wiring because while it's not particularly difficult to do, this stuff can kill you or start a fire if done wrong.

MarkF:

--- Quote from: ddmeltzer8 on May 07, 2019, 02:10:53 pm ---I checked around and know that blue is N,brown is L.
This all is starting to get a bit confusing for my inadequate brain.Im very grateful for all the responses,though!
I only have the aneng 8008,would it suffice for that high voltages?
Thanks.

--- End quote ---

I assume you understand my last drawing??
A quick check if the white wire is the line wire before you take anything apart would be worth while.

I would not have any concerns using the Aneng 8008 myself.  But, the fact that you ask the question RAISES CONCERNS.
I assume you know how to connect up the meter and can safely measure AC voltage?
Just make sure your fingers are away from the metal tips on the probes and that you DO NOT short any wires!

Are you comfortable doing the work?    {Ask more questions..   Get someone to install it..}

We ALL know what assume means?

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