Bad wire connector teardown

I have earlier written about bad cheap Chinese wire connect that did not live up to specifications and was potentially dangerous for mains power at

http://www.epanorama.net/newepa/2018/01/24/cheap-quick-wire-connector-block/

Here is teardown of that

Let’s open open it

Here was all. The problem in construction that there is quite weak spring that pushes against wire. On the other side is just plastic that melts easily if there is heating. The contact area is small and spring is so this msterial that things start to heat up considerably at current more than few amperes!

3 Comments

  1. Tomi Engdahl says:

    Wire Connectors – Failed and Useless
    https://www.youtube.com/watch?v=13wstX-Fcwo

    Cheapo wire connectors – unsafe and useless in any situation. Do not buy or use these.

    Reply
  2. Tomi Engdahl says:

    Wago 221 vs Wago 222 overload test
    https://www.youtube.com/watch?v=fjNUzd6LDsU

    Wago 221 test 20,25,32,40 amps current. All temperatures
    https://www.youtube.com/watch?v=Qpr5DcVMTAA

    Reply
  3. Tomi Engdahl says:

    WAGO 221 Series Inline Splicing Connector with Lever
    https://www.youtube.com/watch?v=5pLUzVjrxbA

    By request – a look inside a Wago inline connector
    https://www.youtube.com/watch?v=qKNLX3A23hE

    Reply

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