[DSteinmann]

For anyone reading this thread, using a 60W cabled for a >60W load is NOT FINE.

Quote: "60W is fine unless you're pegging your CPU/GPU constantly."

Translation: Your house will only burn down if your laptop goes into a busy loop.

[binaryabyss]

"MacBook Pro (15-inch, Late 2016) draws up to 85W. Use the Apple USB-C charge cable that came with your MacBook Pro, or a certified USB-C cable supporting 5A (100W), to power and charge your MacBook Pro (15-inch, Late 2016) at its full capability.

"MacBook Pro (13-inch, Late 2016, Four Thunderbolt 3 Ports) and MacBook (13-inch, Late 2016, Two Thunderbolt 3 Ports) draw up to 60W."

…

"You should not connect any power supply that exceeds 100W, as it might damage your Mac.

"Using a power supply that doesn't provide sufficient power can result in slow or delayed charging. It's best to use the power supply that came with your Mac.

"MacBook Pro can receive a maximum of 60W of power through the Apple USB-C VGA Multiport Adapter or USB-C Digital AV Multiport Adapter. For the best charging performance on MacBook Pro (15-inch, Late 2016), connect the power supply directly to your Mac."

Source: Apple https://support.apple.com/en-us/HT207256

[r00fus]

You're incorrect. Load is negotiated during cabling process.

Sure a bad USB-C cable that doesn't negotiate properly may be a danger, but likely the Macbook simply won't charge on such a cable.

I trust Apple knows what they're dealing with (in regards to poor 3rd party cabling) and not end up like a Note7 situation.