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They use CCA wire for transformers, and don't even solder the connections inside anymore. It's just a wrap with some solder on the connecting wire to stiffen it - but solder doesn't stick to aluminum so there's no electrical or mechanical connection other than the tape on the transformer. It literally just pulls right off.

They use CCA wire for transformers, and don't even solder the connections inside anymore. It's just a wrap with some solder on the connecting wire to stiffen it - but solder doesn't stick to aluminum so there's no electrical or mechanical connection other than the tape on the transformer. It literally just pulls right off.

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A bunch of APC power strips and UPSes got pulled from medical establishments around the nation a few years ago. Seems like they were recalled due to fire.