Author Topic: IP Ratings (Read 8844 times)

Stephen H · « **on:** Nov 19, 2003, 16:45:37 PM »

I am working on a roof top plantroom. Some of the electrical equipment is being custom manufactured and will be mounted on an area of the roof which is totally exposed to the elements. I have been asked to specify a suitable IP rating by the manufacturer. I have asked a number of colleagues but none of them can give me a satisfactory answer. It would be easy for me to be cautious and state a worst case of IP67 but that would be extremely expensive.

Any help/guidance greatly appreciated.

Paul Marsland · « **Reply #1 on:** Nov 22, 2003, 07:50:56 AM »

Merlin Gerin rate their external MV Ringmaster units at IP54, If your switchboards are LV I am sure this would be adequate unless they are installed in an area intended to be hosed down (during routine cleaning etc.) with pressured jets.

dangerdave85 · « **Reply #2 on:** Oct 22, 2007, 17:31:12 PM »

maybe this table will be of some help in your determining of what rating to use.

http://www.aquatext.com/tables/ip_ratings.htm

Zorg · « **Reply #3 on:** Nov 22, 2013, 05:39:03 AM »

Isn't IP67 marine grade for boats? We spec IP55 for all rooftop switchboards. Even on a data centre I recently did they used IP55 and a lot of the plant equipment was marine grade due it being on the harbour.