Rating of a P62

[BillP]

This question was originally posted by Charles on APC forums on 1/6/2013

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I have a APC surge arrest P62. the website rates it at 540 Joules. I read the APC ratings are sometimes different that other manufactures. Is there a equivalent rating for this unit. I just purchased a sleep number bed and the sales person said they recommend a serge protector with a rating of 720 Joules. I was hoping this unit will be work since I have it laying around.

[BillP · Accepted solution]

This reply was originally posted by Angela on APC forums on 1/7/2013

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on some of our items, you may see an eP Joules rating. i do not see it listed on yours.

ep Joules = equivalent protection joules. since we use multi-stage protection for surges and not just metal oxide varistors (MOVs) as some other manufacturers, a Joules rating may not be accurate to compare against other manufacturers that also state joules.

i did some more research and seems that with newer models, we are just calculating joules for them. in addition, let through voltage is something you may want to consider as well and look for the lowest amount of let through voltage. here is some information on that -> http://www.apc.com/site/support/index.cfm/faq/ - search for FA158814

P62 is the "essential" series so you may want to look at something in the performance line instead to meet the requirement.