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> While a quality charger shouldn't try to push 60W or even 100W down an unsuitable cable, I've seen it happen.

How is this even possible?

Cheap cables may not implement the detection properly. Device says I want 100W, charger says I can give 100W, dumb cable just sits there letting them talk and doesn't say no.

What you describe would be a broken charger, not a broken cable.

The charger is supposed to interrogate the cable and only offer 5A if a) the cable responds and b) responds with a 5A capability.

That's what's *supposed to* happen, but some of the bad cables omit that and the charger is actually talking to the device, not the cable.

Huh? That's not how the PD protocol works, it's a multidrop bus, and the device won't respond to requests addressed to the cable.

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