Sonoff mini installation

[Matthew le Roux]

Hey guys.
So I purchased a sonoff mini after seeing that it is pretty easy to install but after I took off the switch at the wall I see I have 3 black wires and a few red ones. Iv attached a picture to show you. Seems this switch was wired strange and now I'm unsure which black and red to use because they all twisted together.
Any guidance would be great thank you

 

[B-1]

Can you switch it on/off at more than one switch?

 

[Matthew le Roux]

Nope, only at that one switch.

 

[thehuman]

My assumption
Black is neutral ( could extend chocolate block to sonoff)

One of the wires of Twisted together red is live supply, its friend is running to the next light switch


Separate red wire will go to light bulb


Are there going to be enough space to fit sonoff in there ?

 

[Dee96]

My assumption
Black is neutral ( could extend chocolate block to sonoff)

One of the wires of Twisted together red is live supply, its friend is running to the next light switch


Separate red wire will go to light bulb


Are there going to be enough space to fit sonoff in there ?

I agree with this

 

[semiautomatix]

My assumption
Black is neutral ( could extend chocolate block to sonoff)

One of the wires of Twisted together red is live supply, its friend is running to the next light switch


Separate red wire will go to light bulb


Are there going to be enough space to fit sonoff in there ?

Got a multimeter?

 

[semiautomatix]

But in the absence of anything else it seems the black is a bypassed neutral.

 

[Geoff.D]

classic daisy chain installation.

The neutrals are commoned together and should be left like that. Connect a wire from the chocolate block to neutral on the Sonoff.


The two red wires twisted together are incoming live and live extended elsewhere. Thos two wires should be connected to "Live" on the Sonoff.
The single red wire goes to the light fitting. That should be connected to "light" on the Sonoff or whatever it is called.

 

[Matthew le Roux]

classic daisy chain installation.

The neutrals are commoned together and should be left like that. Connect a wire from the chocolate block to neutral on the Sonoff.


The two red wires twisted together are incoming live and live extended elsewhere. Thos two wires should be connected to "Live" on the Sonoff.
The single red wire goes to the light fitting. That should be connected to "light" on the Sonoff or whatever it is called.

This makes sense, probably why they twisted the two red together. I'll give this a try thank you.

 

[Matthew le Roux]

Got a multimeter?

I do yes

 

[semiautomatix]

I do yes

Should be able to check red to black is ~230Vac. Do not ground yourself to the cables!

 

[Tinuva]

My whole house is wired like this. @Geoff.D is spot on.

 

[maumau]

classic daisy chain installation.

The neutrals are commoned together and should be left like that. Connect a wire from the chocolate block to neutral on the Sonoff.


The two red wires twisted together are incoming live and live extended elsewhere. Thos two wires should be connected to "Live" on the Sonoff.
The single red wire goes to the light fitting. That should be connected to "light" on the Sonoff or whatever it is called.

Criminal that this knowledge is no longer passed on via apprenticeships

We had a plumber here last week - best plumber ever!! His father was a plumber and he did 5 years apprenticeship/working with his Dad. You just don't get that level of knowledge today.

 

[Matthew le Roux]

classic daisy chain installation.

The neutrals are commoned together and should be left like that. Connect a wire from the chocolate block to neutral on the Sonoff.


The two red wires twisted together are incoming live and live extended elsewhere. Thos two wires should be connected to "Live" on the Sonoff.
The single red wire goes to the light fitting. That should be connected to "light" on the Sonoff or whatever it is called.

I just wanted to let you know that this worked perfect. Thank you all for the help on this one.

 

[Neuk_]

classic daisy chain installation.

The neutrals are commoned together and should be left like that. Connect a wire from the chocolate block to neutral on the Sonoff.


The two red wires twisted together are incoming live and live extended elsewhere. Thos two wires should be connected to "Live" on the Sonoff.
The single red wire goes to the light fitting. That should be connected to "light" on the Sonoff or whatever it is called.

Yep, I ran in to this last week when fitting two mini's to two outside set of lights, each switch box was used as a junction box but it was fairly easy to sort out with some chocolate blocks and help from @Gielie01 . The next set of outside lights I want to do is a bit more complicated as they can be switched using any of two switches, so I'll need some help from someone with a bit more electrical experience than I have.

 

[Geoff.D]

Yep, I ran in to this last week when fitting two mini's to two outside set of lights, each switch box was used as a junction box but it was fairly easy to sort out with some chocolate blocks and help from @Gielie01 . The next set of outside lights I want to do is a bit more complicated as they can be switched using any of two switches, so I'll need some help from someone with a bit more electrical experience than I have.

Don't ask me. It becomes the equivalent of a 3-way control of one light.

 

[Tinuva]

Yep, I ran in to this last week when fitting two mini's to two outside set of lights, each switch box was used as a junction box but it was fairly easy to sort out with some chocolate blocks and help from @Gielie01 . The next set of outside lights I want to do is a bit more complicated as they can be switched using any of two switches, so I'll need some help from someone with a bit more electrical experience than I have.

Imagine those those two switches is a single switch. Then the only complication is to find where they actual become one and output power to the light/s. Once you have that, that is what needs to be used on a mini as if it was a single switch.

That is the simplest way I can explain it, and how I did a 2-way switches on a single shelly. Works 100% for me.

 

[Tinuva]

Or if you want complicated, here is a wiring diagram that includes your 2 way switches!

 

[Tinuva]

I think doing it on a shelly was easier than this

 

[Neuk_]

Don't ask me. It becomes the equivalent of a 3-way control of one light.

It is simpler than that from what I understand, the Mini essentially replaces the one switch in the electrical wiring but is able to take an input from the switch it replaces as an input.