What is the Ingress Protection Rating of an outdoor light housing?

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 3

Answer 1

An IP rating is also known as Ingress Protection or International Protection ratings which are defined to the international standard of EN 60529 (British BS EN 60529:1992).
This standard is used to define the levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies such as tools, dirt, and moisture.
The minimum IP rating for a garden light is IPX3 (normally IP43), which protects against rain or spraying water at a 60° angle from vertical.
The Ingress Protection Rating of an outdoor light housing IP65, as it indicates a dust-tight housing as well as resistance to jets of water.
IP Rating Reference Chart

IP Rating	First Digit - SOLIDS	Second Digit - LIQUIDS
IP20	Protected from touch by fingers and objects greater than 12 millimeters.	Not protected from liquids
IP55	Protected from limited dust ingress.	Protected from low-pressure water jets from any direction.
IP65	Protected from total dust ingress.	Protected from low-pressure water jets from any direction.
IP67	Protected from total dust ingress.	Protected from immersion between 15 centimeters and 1 meter in depth.