What makes an enclosure for an electrical switchboard weatherproof and suitable for outdoor use? There are number of requirements which are not as clear cut as you might think. IP Ratings, corrosion resistance and UV stability should all be considered when veryfying if an enclosure is suitable. These areas and their relevance to enclosure selection for weatherproof outdoor application... https://www.cleantechcontrols.com.au/electrical-switchboards-enclosures-for-outdoors/