It's standard practice for electricians to leave at least six inches of wire in wall boxes. That way, you've got enough slack to install a new outlet or switch. But if you're short on wire in a wall ...

Adding to the vendor’s Lever-Nuts 222 compact-connector series, the 222-412 connector has a two-conductor splice joining the three- and five-conductor models in the series. The device has a UL/CNL ...