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Author Page for Todd Lottmann

Todd Lottmann is an electrical engineer employed by Cooper Bussmann, Inc. focusing on codes and standards. Todd is an alternate member of NEC Code-Making Panel 12 representing NEMA, a member of the UL 508A standards technical panel, member of NEMA 1IS Industrial Controls section, and involved with the NFPA 79 technical committee. Todd is the Bussmann IAEI representative participating in the national section meetings and various chapter meetings around the country.

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Figures 1 & 2. System lacking, and one system providing, selective coordination

Selective Coordination of Elevator Circuits

[ 0 ] By  |  September 18, 2005  |  IAEI September-October 2005

During the past revision cycle for the 2005 NEC, a new definition was created in Article 100 for selective coordination. The need for this definition can be taken from its creation and shows the expansion of selective coordination requirements throughout the NEC. One of the basic requirements for the creation of a definition in Article [...]

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Figure 1. With the new equipment marking requirements, compliance with 110.10 is simplified.

New Short-Circuit Current Rating Requirements Facilitate Compliance with 110.10

[ 0 ] By  |  January 21, 2005  |  IAEI January-February 2005

Well, another three years has passed and with it another revision cycle of the NEC has been completed. As so often happens during code cycles, several significant changes occurred during the 2005 NEC code cycle. One of the more significant changes is the new requirement for industrial machinery electrical panels, industrial control panels, certain HVAC [...]

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Figure 1. One major characteristic surrounding arcing faults is progression of the fault to other energized parts of the system caused by the buildup of ionized matter in the arc

Arc-Flash Hazards

[ 0 ] By  |  May 29, 2003  |  IAEI May-June 2003

Electrical hazards, such as arc flash, can be extremely damaging to equipment and, more importantly, to people. An alarming number of electrically related accidents occur each year, often resulting in serious third degree burns or death. Luckily there have been recent significant advances in the electrical industry surrounding electrical hazards, particularly arc flash. The following [...]

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