This booklet addresses the fundamentals of securities custody and related. services, and provides guidance for examining those activities in national. banks. One of a series of specialized asset management booklets in the.
1 There are three levels of protection in the UL rating -- 330 V, 400 V and 500 V. Generally, a clamping voltage more than 400 V is too high.  Energy absorption/dissipation - This rating, given in joules, tells you how much energy the surge protector can absorb before it fails. A higher number indicates greater protection. Look for a protector that is at least rated at 200 to 400 joules. For better protection, look for a rating of 600 joules or more.
because heat is a form of energy it can be converted to joules if 4 186 calories are in one joule then 0 2389 calories are in one joule to find calories per joule divide calories by joules 1 4 186 0 2389 cal joule