When wiring, use these heavy-duty, 10-gauge connectors where a plug and socket can't be used. Warning [https://productimageserver.com/prop65/6pt.png]WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov [http://P65Warnings.ca.gov].