McGraw Hill's National Electrical Code 2023 Handbook, 31st EditionFrederic P. Hartwell · First published 2024Open the Tome
American Electricians' Handbook, 17th EditionFrederic P. Hartwell · First published 2021Open the Tome
McGraw-Hill's National Electrical Code 2020 Handbook, 30th EditionFrederic P. Hartwell · First published 2021Open the Tome
National Electrical Code (NEC) 2017 HandbookJoseph F. McPartland, Brian J. McPartland, Frederic P. Hartwell · First published 2017Open the Tome
EC&M illustrated changes in the 1999 national electrical codeFrederic P. Hartwell · First published 1998Open the Tome
Illustrated changes in the 1999 National electrical codeFrederic P. Hartwell · First published 1998Open the Tome
Understanding NE code rules on-- motors & motor controlsFrederic P. Hartwell · First published 1995 · Latest edition 1998Open the Tome
Understanding Ne Code Rules on Swimming Pools, Spas & Hot TubsFrederic P. Hartwell · First published 1996Open the Tome
Understanding NE code rules on-- emergency & standby power systemsFrederic P. Hartwell · First published 1996Open the Tome
Illustrated changes in the 1996 National electrical codeFrederic P. Hartwell · First published 1995Open the Tome
Understanding NE code rules on-- grounding and bondingFrederic P. Hartwell · First published 1994Open the Tome
Understanding NE code rules on-- medium voltage power systemsFrederic P. Hartwell · First published 1994Open the Tome
Understanding NE code rules on-- hazardous (classified) locationsFrederic P. Hartwell · First published 1993Open the Tome
Understanding NE code rules on-- transformersFrederic P. Hartwell · First published 1993Open the Tome
American electricians' handbookTerrell Croft, Wilford I. Summers, Frederic P. Hartwell · First published 1913Open the Tome
