General > General Technical Chat
DEADLY WIRING FAULT ; Atten 858D+ Hot Air Rework Station
staze:
So, purchased one of these from sainsmart (110V obviously), and it just arrived today. Before powering it up, I took it apart, and for the most part, everything looks good (though it smells like they boxed it within minutes of its paint job... smells like an autobody shop).
Nozzle and body of unit are grounded (nozzle has a nice solder to ground, body is grounded through one of the bolts on the transformer. Bolts have lock-washers. Interesting that the transformer is listed as 110V/50Hz. Guessing the 10V higher we have here, and the 10Hz extra shouldn't be an issue (would think the frequency would only matter for any kind of clock using mains frequency).
Fused on the hot leg of the wiring, nice.
Alas, it's switched neutral. While certainly not a deadly fault (hey, they used to do this on house wiring in the states), I will fix it. I just don't get why they'd do it that way... how much could it really save?
Anyone have suggestions for how to fix the switching? Figured I'd just cut the current switched neutral, solder and heatshrink, then cut and solder in some splices to have the hot switched. Anyone have a more elegant solution? 16g stranded good enough for the load?
amyk:
--- Quote from: staze on August 13, 2013, 04:24:32 am ---Alas, it's switched neutral. While certainly not a deadly fault (hey, they used to do this on house wiring in the states), I will fix it. I just don't get why they'd do it that way... how much could it really save?
--- End quote ---
It saves cutting and connecting one more piece of wire... probably a not insignificant cost if you're building millions of units.
Monkeh:
--- Quote from: staze on August 13, 2013, 04:24:32 am ---16g stranded good enough for the load?
--- End quote ---
16?! What is this, a welder? You'd get away with 22 easily.
staze:
For 110v, 700W? Would think 22g would be a bit small for that... 16g is probably a bit big too. =)
Monkeh:
--- Quote from: staze on August 13, 2013, 03:56:55 pm ---For 110v, 700W? Would think 22g would be a bit small for that... 16g is probably a bit big too. =)
--- End quote ---
Only if you're using the shit 60C rated stuff.
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