WAGO Connectors : A series of modular connector devices that don't require tools. Wire is pushed in the holes of the connector and stays in place by pressure
US Department of Labor, Ergonomics eTool: Solutions for Electrical Contractors - Glossary, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/SLTC/etools/electricalcontrac tors/glossary.html, (OSHA/ Ergo for Electr Contractors - Amer) {626}