In 1904, back when Thomas Edison was alive and Tesla was just his rival's last name, Harvey Hubbell ... of a plug to prevent unauthorized use of equipment. Or you can simply insert a twist tie ...

It currently has a 3 prong twist and lock plug on the end of it's cord, I'd like to convert it to a 'normal' 5-15 plug for home use. I see an adapter here that looks like it would work but a new $ ...

I have a UPS (2200VA) that came with both a straight 15A plug and a non locking 20A plug. We're currently using the 15, but are moving offices. My new computer room has 2 30A twist lock outlets ...