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WAGO Connector Performance When Loaded With 100A Current—Is It Safe for High Loads?

Aktor 42501 16
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Can a WAGO connector safely handle a 100 A load, and what does such a test actually prove?

A 100 A test only shows that the connector can survive a short-term overload and still make contact; it does not prove it is suitable for continuous 100 A service [#9281866][#9281960][#9282038] In the video, the measured drop was 5.6 mV, which corresponds to about 3.2 µΩ at that moment, but that is still only a snapshot under an overheated condition [#9281914] Several replies say the more meaningful test is long-term operation at normal working current, plus aging and corrosion over years, because that is what matters in real installations [#9281960][#9282038][#9282410] One user also reported that a typical original WAGO coupler overheated and was damaged in a few minutes at about 60 A, with 2.5 mm² wires also getting very hot [#9284939] So the thread’s practical conclusion is: impressive demonstration, but not evidence that such a connector is safe for sustained high-current use beyond its rating [#9281866][#9284939]
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  • #1 9281723
    Aktor
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    http://www.youtube.com/watch?v=uMG66uUp5cM&feature=related

    Here you have an interesting video - test of the WAGO connector loaded with 100 A. What do you say?

    I separated from another topic. Please, next time don't refresh old threads. [Luke]
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  • #2 9281866
    Miniax
    Electrician specialist
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    Aktor wrote:
    http://www.youtube.com/watch?v=uMG66uUp5cM&feature=related

    Here you have an interesting movie - test of the WAGO connector loaded with 100 A. What do you say?


    It has only been proven that WAGO's proprietary couplings fully fulfill the task entrusted to them. A friend who works at ZE said that they did a similar experiment and the result was comparable - molten insulation on the wires when the connector was still holding well.
  • #3 9281914
    Aktor
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    In this video, they still make measurements of the junction and it turned out that the voltage drop on such an overheated link is 5.6 mV, which means that the resistance of such a junction is 3.2 micohm.
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  • #4 9281960
    Miniax
    Electrician specialist
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    Aktor wrote:
    In this video, they still make measurements of the junction and it turned out that the voltage drop on such an overheated link is 5.6 mV, which means that the resistance of such a junction is 3.2 micohm.


    Yes, I saw, but this measurement was of little use. Installation in this condition is only suitable for replacement, so the decline in such an installation is not very important.
    It would be more useful to measure it after a long-term load with full currents flowing under normal operating conditions (as indicated by the terminal strength up to 20 A) and possibly with short-term overload currents.
  • #5 9281999
    Aktor
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    Now it would be useful to do such a test or a similar one for twisted pairs, soldered twisted pairs, connections on cubes, connections on terminal strips [in total, what is the difference between a terminal block and a terminal strip, I do not know :-) ].
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  • #6 9282038
    Miniax
    Electrician specialist
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    Aktor wrote:
    Now it would be useful to do such a test or a similar one for twisted pairs, soldered twisted pairs, connections on cubes, connections on terminal strips [in total, what is the difference between a terminal block and a terminal strip, I do not know :-) ].


    The problem is that bolted connections cannot be checked in practice, because each is simply different - it cannot be classified.
    As for the tests, it would be more reliable (as I wrote before) to load such connections with operating currents for a long time. Such a temporary check with currents, which in a properly made installation cannot appear on such a connector (apart from a short circuit, but these are fractions of a second), are rather useless.
  • #7 9282410
    Anonymous
    Anonymous  
  • #8 9282484
    Joker.
    Level 31  
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    You can use the soldering iron current for your own tests.
    Placing a section of the conductor at the tip, heating the conductor to the temperature determined by us and measuring the current with a clamp meter. Then cutting the wire in half, putting on the balance and the same test. Another repetition of this with a connector cube and a twisted pair.
  • #9 9282867
    Anonymous
    Anonymous  
  • #10 9284939
    Darom
    Electrician specialist
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    Hello

    This test surprised me a bit.
    About three years ago I did a similar test myself, which I described then on another forum.
    The test was performed using a 150/5 current transformer and an autotransformer.
    The current was measured on the / let's call it - primary (5A) side /, on the secondary side (150A) of the transformer, a typical wire coupler (original WAGO) was connected.
    At the indicated current of 2A (i.e. connectors 60A) it became overheated and damaged. The 2.5mm2 wires were also very hot. I do not remember what time it was to destroy it, but I think it was just a few minutes. This way I destroyed two couplings.

    I still have both the autotransformer and the transformer - so there is no problem with repeating the experiment. The problem, of course, is finding time. As long as I have it (in the summer), I will not fail to record the test and present it to my colleagues. I myself encourage you to conduct such a test yourself, the more so because many electricians have access to transformers, instead of an autotransformer, you can use the light bulb forcing the current.

    ADDED:
    It would also be nice to measure the voltage drop with such a current forcing - I didn't do it then.

    kisses
    - GIFT-
  • #11 9285241
    Anonymous
    Anonymous  
  • #12 9285909
    Aktor
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    Connections in a box made "on a twisted pair" look grand and playful, even if the parameters of such a connection are good (better) than the weight or screw cubes (slats). That is why I think that you should connect the cables using "appropriate accessories" and not "twisting the wires", so such tests are interesting and opinions on how to connect the wires and what.
  • #13 9285925
    retrofood
    VIP Meritorious for electroda.pl
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    Aktor wrote:
    Connections in a box made "on a twisted pair" look grand and playful, even if the parameters of such a connection are good (better) than the weight or screw cubes (slats). That is why I think that you should connect the cables using "appropriate accessories" and not "twisting the wires", so such tests are interesting and opinions on how to connect the wires and what.


    This topic has been rolled over several times, so any subsequent post on this issue will go to the trash. This is not the case.
  • #14 9285940
    Łukasz-O
    Admin of electroenergetics
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    Interesting theory. I have always thought that the most important feature of a connection is its certainty, not its appearance. Of course, the appearance speaks of an electrician.
    So let's get back to the tests :)
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  • #15 10901033
    doktorkidler
    Level 2  
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    And I used both Wago and twisted pair and to be honest I am more convinced of the twisted pair, this connection seems to me to be more "certain" maybe this is an old method, almost archaic, I would say and certainly labor-intensive but still reliable
  • #16 10901075
    19barti78
    Level 15  
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    But my friend dug up the cutlet ...

    As for connecting with cubes, recently the SEP forum links were red-hot with this topic, but for reasons that I did not see, it was removed ...
  • #17 10901087
    Łukasz-O
    Admin of electroenergetics
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    Close the reheated cutlet.

Topic summary

✨ The discussion revolves around a video testing the WAGO connector under a load of 100 A. Participants share insights on the performance of WAGO connectors, noting that while they can handle high currents, issues such as molten insulation and overheating can occur. Measurements indicated a voltage drop of 5.6 mV and a junction resistance of 3.2 micohm under extreme conditions. Some contributors suggest that long-term testing under normal operating conditions would provide more valuable data. Concerns about the durability of connections over time, particularly regarding corrosion, are also raised. Comparisons are made with other connection methods, such as twisted pairs and soldered connections, with some expressing a preference for the reliability of twisted pairs despite their labor-intensive nature.
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