About: http://webisa.webdatacommons.org/232466218

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	For electrical circuits operating at current levels typical of such power sources as household electrical wiring, opening and closing of the relay contacts is often accompanied by arcing between the contacts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au