Residual Current Breaker with Overload protection (RCBO) A RCBOs combines the functions of a MCB and a RCD in one unit. They are used to protect a particular circuit, instead of having a single RCD for the whole building. Generally these are used more often in commercial building than domestic ones.
The USS ARIZONA as a historic artifact derives much of its significance in relation to the attack on Pearl Harbor and in turn on the outbreak of war. The order of thematic emphasis ensues from the nature of a memorial and the necessity of placing primary emphasis on interpretation of resources at hand.
USS Cole attack. USS Cole attack, attack by Muslim militants associated with the organization al-Qaeda against a U.S. naval destroyer, the USS Cole, on Oct. 12, 2000.