Ghost hunting is the process of investigating locations that are reported to be haunted by ghosts.Typically, a ghost-hunting team will attempt to collect evidence supporting the existence of
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EARTHING AND EQUI-POTENTIAL BONDING. By Geoff Rowlands. Why Earth? One side of the electricity supply (the neutral) is firmly connected to earth at the substation to prevent the supply 'floating'
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An electric strike is an access control device used for doors.It replaces the fixed strike faceplate often used with a latchbar (also known as a keeper).Like a fixed strike, it normally presents a ramped surface to the locking latch allowing the door to close and latch just like a fixed strike would.