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What’s the difference between the Main and System Bonding Jumper?

What’s the difference between the Main and System Bonding Jumper?
The main bonding jumper and the system bonding jumper perform the same function. And that is to connect the Equipment Grounding Conductor (bare or green wire) to the grounded neutral conductor at either at the transformer location (separately derive system) or the first panel supplied by the transformer. Although they perform the same function, the two terms are used to distinguish themselves from each other. The main bonding jumper is installed at the incoming service equipment. The
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NFPA 70E Class - March 26, 2021

NFPA 70E Electrical Safety in the Workplace ClassDate:  March 265thTime:  8:30 AM to 4:30 PMLocation: King of Prussia SheratonCost:  $400 per person  (additional $50 for book)Includes  lunch and breakfast pastriesRegistration:  Call 610 670 6061 (ext 103) to register

High Voltage Training - January 12 and 13, 2021

High Voltage Training - January 12 and 13, 2021
Medium Voltage Training (2400 to 34.5 KV)Date:  January 12 and 13, 2021Time:  8:30 AM to 4:30 PMLocation: Sheraton King of PrussiaCost:  $900 per person  for the two day classIncludes  lunch and breakfast pastriesRegistration:  Call 610 670 6061 (ext 103) to register 
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NEC 2011 Code Change Class - March 11, 2021

NEC 2011 Code Change ClassDate:  March 11thTime:  8:30 AM to 4:30 PMLocation: King of Prussia SheratonCost:  $400 per person  (additional $75 for book)Includes  lunch and breakfast pastriesRegistration:  Call 610 670 6061 (ext 103) to register