Never used them, do not know what they cost but they are made.
Tap Connectors
The SC Tap Splice is used for splicing into an existing solid conductor 14/2 and 12/2 cable with ground. Stranded wire versions are available for 16/2, 14/2, and 12/2 wire. This provides the user the ability to add an additional branch line or add modular hookups in their products anywhere they are needed. The Molex Tap Splice is relatively small and fits into walls, floors, and ceiling cavities with ease. Once the Tap connector has been spliced into the cable, the branch line wire to a SC Power Splice Connector can be mated to the Tap.
www.molex.com [This message has been edited by iwire (edited 08-09-2004).]