Connecting this to two plugs on the same circuit won’t short anything unless one of the outlets is wired incorrectly.
They’re used to backfeed power to your house from a generator during power outages.
Technically not legal to use, but most people aren’t going to pay $1k for a proper transfer switch.
They come with the caveat of ‘not to be operated by fuckwits’ since you can kill a linesman if you don’t flip your main breaker before using them.
Connecting this to two plugs on the same circuit won’t short anything unless one of the outlets is wired incorrectly.
They’re used to backfeed power to your house from a generator during power outages. Technically not legal to use, but most people aren’t going to pay $1k for a proper transfer switch. They come with the caveat of ‘not to be operated by fuckwits’ since you can kill a linesman if you don’t flip your main breaker before using them.