I installed them all over our shop until yesterday I found out that when you plug in appliances that don't have a grounding pin, the plug barely reaches it. the bottleneck that catches the pins and holds the plug in the socket. Most of my plugs are from devices with a grounding plug and it's not really noticeable there, but the problem is that if the plug twitches so easily that there is a risk of fire because the pins aren't making firm, firm contact with the pins inside the block . The pinching of the output contacts is done very deeply and does not touch the pins along their entire length. I checked several of them and they were all the same. If it wasn't a bad batch I don't trust them anymore and won't buy them again.
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