Wiring Sonoff 3 gang smart switch

[NikhilBhana]

Does anyone have any idea how to wire this Sonoff 3 gang smart switch.
1. First I am not sure if the black cable is the Neutral wire.
2. Also where do all the blue cables go on the Sonoff switch?

 

[soulie]

Does anyone have any idea how to wire this Sonoff 3 gang smart switch.
1. First I am not sure if the black cable is the Neutral wire.
2. Also where do all the blue cables go on the Sonoff switch?

red will allways be your lives in and out to another circuit ,blue is allways the switched wire ie from switch to lamp ,black should be neutral throughout its length .why you have a l and n on one circuit beats me unless thats a power indicator or they ran out of colours and improvised.

 

[NikhilBhana]

Thank you. I'm just very confused why whether I will need to join all the red wires into the L in on the new switch

 

[hilton]

First rule of home electrics. Don't assume the plonker electrician, a did the wiring correctly and b used the correct colours consistently for all outlets.

Get a meter and test each cable but when in doubt get a sparky over.

 

[quovadis]

Thank you. I'm just very confused why whether I will need to join all the red wires into the L in on the new switch

Get an electrician. If you remove the switch you'll only have 1 red wire.

But to answer your questions:
1) Get an electrician who'll probably use a multimeter and test. If it's not a neutral he can run one and figure out what the black cable is for. It might be for a two-way switching circuit.
2) Get an electrician who'll probably wire up each load (the blue cables) to L1, L2, L3 or as per current 1 cable to L1 and 2 cables to L2.

Lastly, get an electrician.