BS IEC 60309-4. Plugs, socket-outlets and couplers for industrial purposes - Part 4. Switched socket-outlets and connectors with or without interlock Ingestion-build-47786 or raised designs are permitted

or raised designs are permitted on the outside surfaces of the flanges

BS EN 61302 provides its users with definitions and guidelines for the test specimen

A working draft (sometimes called a draft document) is a type of technical report that is a work in progress

others might involve remounting the specimen or changing it

This document specifies the minimum dimensional and unobstructed space requirements around future civil-passenger transport aircraft upper deck passenger doors when they are intended to be compatible with passenger boarding bridges planned in airports worldwide

BS IEC 60309-4. Plugs, socket-outlets and couplers for industrial purposes - Part 4. Switched socket-outlets and connectors with or without interlock Ingestion-build-47786 or raised designs are permitted