IEC 60670-1:2002+A1:2011 applies to boxes, enclosures and parts of enclosures (hereafter called ""boxes"" and ""enclosures"") for electrical accessories with a rated voltage not exceeding 1 000 V a.c. and 1 500 V d.c. intended for household or similar fixed electrical installations, either indoors or outdoors. It bears the edition number 1.1. The technical c