![]() ![]() Some of them are quite all right, while others are just garbage to work with. I’ve also bought several models by mail from that country far away, and my feelings are mixed. ![]() Posted in home hacks Tagged clamp lever terminal, electrical safety, house wiring Post navigation One of these being the connectors by the German brand ViD, which would seem to be a slightly cheaper alternative to the Wago connectors, with similar guarantees of safety.Īt the end of the day it is the certification that matters, after all, since long-term reliability is of primary concern with house wiring, not whether a few Euros were saved on material costs. While running the connectors through their paces with high-current, fire and mechanical strength tests, the conclusion was that all are good enough for hobbyists use and some brief connections while testing, but that only the ones with independent certification marks (like VDE) filled him with enough confidence to consider using in house wiring. The resulting selection of seven connectors come in a wide variety of shapes, colors and configurations, though all are supposedly rated for mains (250 VAC) voltage and safe enough to put into a permanent installation. This was the thought behind a recent video by (also embedded after the break) when he hopped onto everyone’s favorite e-commerce website and searched for ‘clamp lever terminal’. When it comes to no-fuss wire connectors, Wago clamp connectors are an attractive target to save some money on due to their perceived high cost. For these thin wires it's much better to use the proper connectors for phone lines, which have smaller holes that provide strain relief and hold the wire properly.At the intersection of saving a few bucks and expensive home insurance claims due to a house fire, we find clones of certified and tested electrical connectors, even when many would argue that so-called wire nuts are fire hazards no matter how many certification labels are on them. If the wires are thin, especially if you use them to splice phone wires, there's another problem: the hole is too large so there is no strain relief and the wires wiggle too much, so they can break. ![]() It's definitely not listed for use with stranded wires, no matter what's on the tip, so a definite no. Also a big adantage of wago 2273 is the wires can turn inside the terminal which really helps when squeezing all the wires inside a junction box, and that can't happen with a ferrule. In the event you manage to stick a wire with ferrule in the wago, you'll probably manage to push it half way in, but the indents left by the crimping tool on the ferrule will catch on the leaf spring and it will stay stuck there forever, can't push it in, can't pull it out. So you can't use stranded wires, even with a ferrule. If you're talking about the Wago 2273 leaf spring terminals without levers, then these are only compatible with solid core wires. If the wires are solid or they have ferrules, the thicker one will hold the clamp open and the slimmer wire may look like it's secured, but it will soon pull out. It is possible to stick two thin wires in the same hole on a Wago 221. In this case it makes sense because wires are pre-cut, stripped and ferruled by machines: having the factory worker manually strip and twist the wires before inserting them and check for stray strands would be a waste of time and an unnecessary failure risk. Wago's PCB connectors explicitly require ferrules for stranded wire. Just twist the strands and make sure there isn't a stray strand poking out waiting to make a short. ![]() I sure wouldn't bother removing a ferrule if there was one at the end of the wire, but adding one is a waste of time. There doesn't seem to be any pros or cons to using ferrules. If you're talking about the Wago 221 with levers, the manufacturer's instructions and datasheet say no ferrules are necessary. ![]()
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