3Protect Equipment from Fault Currents WHY DO WE GROUND?SAFETYProtect PeopleProtect Equipment from Fault Currents
4Electricity will always follow the path of least resistance to ground. WHY SHOULD WE GROUND?Electricity will always follow thepath of least resistance to ground.Proper circuit grounding will keep electricity from using your body to get to groundGrounded Circuit Requirements:Path is continuous and permanentAmple capacityLow ResistanceCircuit parts are bonded together
5WHAT DO WE GAIN?Provides personnel safety - #1 priorityProvides a stable signal reference for instrument accuracyControls Radio Frequency emissions & Electromagnetic Interferences (EMI’s)Provides a discharge path for short circuits and lightning strikes
6LIGHTNING PROTECTION LIGHTNING FACTS Packs between 35,000 and 40,000 amperesGenerates temperatures as high as 50,000 CTravels as far as 40 milesStrikes somewhere on the earth every secondKills 100 people each year in the U.S.A.Destroys millions of dollars in property and equipment
33BURNDYWELD USES AN EXOTHERMIC PROCESS TO JOIN COPPER PROVIDES A SOLID COPPER IRREVERSIBLE BONDWILL NOT LOOSEN OR CORRODE AT THE WELD
34EXOTHERMIC PROCESSThe exothermic process is a simple, efficient method of welding copper to copper or copper to steel.This process uses a high temperature reaction of powdered copper oxide and aluminum.Reaction takes place in a graphite mold.Mold will last for 50 or more welds with proper care.This system is very field friendly, since it is light and portable and requires no outside power.
35THE SEQUENCE OF STEPSOpen mold using handle clamp, and insert the conductors as desiredInsert steel disc into the mold cavityPour powdered metal into the mold cavityClose the lidTap powder container to add the starting powder to ignition pocketUse flint device to igniteBrush and remove moldMOLD
48COMPRESSION Range Taking Permanent Safe to install Quick and Easy BURNDY HAS DEVELOPED AN IRREVERSIBLE COMPRESSION GROUND SYSTEM WHICH MEETS THE STRINGENT SAFETY AND PREFORMANCE REQUIREMENTS UL AND IEEE.CONNECTORS EMPLOY WELL PROVEN DESIGN PRINCIPLES AND TECHNOLOGY THAT HAVE BEEN IN EXISTENCE FOR OVER 60 YEARS.