PDHonline.com- PDH Course Author Biography

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PDHonline Course Provider Biography

Timothy L. O’Hearn graduated from Wichita State University in 1981 with a BSEE degree. He is a senior member of IEEE, technical author, past chairman of a local section of IEEE and is a member of the IEEE Industry Applications Society. He is a registered professional engineer in several states. He is experienced in the design of electrical distribution systems for large industrial facilities.

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Course No.	Courses Provided by Timothy L. O'Hearn, PE	PDH Units	Current Price	Buy	Quiz
E106	Sizing Supply Conductors for Two-Speed Single Winding Induction Motors	2	$59	Buy	Quiz
E121	Calculating Motor Start Time	3	$89	Buy	Quiz
E163	Substation Design Guide	15	$349	Buy	Quiz
E194	Power System Analysis	15	$349	Buy	Quiz
E209	IEEE Red Book, Part 1	12	$299	Buy	Quiz
E210	IEEE Red Book, Part 2	12	$299	Buy	Quiz
E224	Grounding of Industrial and Commercial Power Systems	12	$299	Buy	Quiz
E279	IEEE Recommended Practice for Powering and Grounding Electronic Equipment	15	$349	Buy	Quiz
E289	National Electrical Safety Code	15	$349	Buy	Quiz
E322	NFPA Standard for Purged and Pressurized Enclosures for Electrical Equipment	5	$129	Buy	Quiz
E323	IEEE Standard for Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers	5	$129	Buy	Quiz
E324	IEEE Guide for the Application of Electric Motors in Class I, Division 2 Hazardous (Classified) Locations	5	$129	Buy	Quiz
E327	IEEE Standard for Metal-Clad Switchgear	5	$129	Buy	Quiz
E333	IEEE Application Guide for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis	9	$219	Buy	Quiz
E340	Form-wound Squirrel-Cage Induction Motors-500 Horsepower and Larger	5	$129	Buy	Quiz
E362	Protection of Primary and Secondary Substation Transformers	5	$129	Buy	Quiz
E363	Protection of Three Phase Integral Horsepower Motors	7	$169	Buy	Quiz
E364	Ground-fault Protection	3	$89	Buy	Quiz
E414	Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities as Class I, Division 1 and Division 2	12	$299	Buy	Quiz
E453	IEEE Standard for Performance of Adjustable Speed AC Drives Rated 375 kW and Larger	7	$179	Buy	Quiz
E461	IEEE Std C57.12.34	5	$129	Buy	Quiz
E534	Standard for the Installation of Lightning Protection	8	$199	Buy	Quiz
E561	Guide for the Interpretation of Gases Generated in Oil Immersed Transformers	3	$89	Buy	Quiz
E607	IEEE Guide for Safety in AC Substation Grounding Part 1	8	$199	Buy	Quiz
E614	IEEE Guide for Safety in AC Substation Grounding Part 2	8	$199	Buy	Quiz
E636	NFPA 70E Electrical Safety in the Workplace	8	$199	Buy	Quiz
E658	IEEE 1584-2018 Guide to Performing Arc-Flash Hazard Calculations	8	$199	Buy	Quiz
E675	IEEE 515-2017 IEEE Standard for the Testing, Design, Installation, and Maintenance of Electrical Resistance Trace Heating for Industrial Applications	8	$199	Buy	Quiz
E685	IEEE 551-2006 Recommended Practice for Calculating Short-Circuit Currents in Industrial and Commercial Power Systems	8	$199	Buy	Quiz
E709	IEEE Std C57.12.10-2019 Requirements for Liquid-Immersed Power Transformers	8	$199	Buy	Quiz
E753	CSA/ANSI C22.2 No. 273.19 Cablebus	8	$199	Buy	Quiz

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