I would recommend to download (Electrician's Bible) locate on this link (http://goo.gl/XGYbI)
the app name is Electrician's Bible
Scroll down to the session More by Quky and tap on the Electrician's Bible app.
The reason is that due to natural disaster I lost my developing computer with all the information on it. For that reason I cannot upload more software update to this app (Electrician Bible) in Google play store any more.
We apologize for any inconvenience that this may have caused.

Please don't download this, instead use this from here
http://goo.gl/XGYbI

Last warning

If you decided to install this one you wont be able to receive updates any more

Please don't download this, instead use this from here
http://goo.gl/XGYbI

If you decided to install this one you wont be able to receive updates any more.

You must be in android version 2.3 Gingerbread or greater, and have an internet connection on your device.

A most have utility for electrician, electrical contractors or those looking to pass an electrical certification.
Calculations per National Electric Code 2011.
Calculations included:
Voltage Drop
-Circuit’s Conductors voltage drop.
-Minimum Conductor Size.
Pipe Bend
-Offset.
-Three bend saddles.
-Detail Conduit Support.
Raceway calculations
-Raceway size calculation.
-Maximum number of same wire.
-Spacing for Conductor Supports.
-Conduit support.
-Conduit spacing.
Ampacity
-Conductor Ampacity, wire size.
-table 301.15(B)(16).
Box Fill
-Sizing outlet box.
-Sizing Pull box.
Load calculation (Residential)
-Single family.
-Range and dryer’s calculation.
-Service \ Feeder Conductors.
Transformers
-Transformers Size.
-Transformers OCPD calculations.
-Transformers Short Circuit calculations.
-Delta-Wye transformers Calculations.
Motors calculations
-Motor OCPD calculations.
-Motor NEMA Starters calculation.
-Motor Locked Rotor Calculation.
Electrical schematics
-Delta-delta transformers.
-Delta-Wye transformers.
-Three way switch.
-Start/stop AC motor.
-3 phase A.C. Motor Windings and Connections Wye
-3 phase A.C. Motor Windings and Connections Delta
Burial Depth
-600v or less.
-Over 600v.
Grounding
-Equipment Grounding
-Grounding Electrode Conductor.
NEMA Device Configurations.
-Plugs.
Electrical Calculations.
-Formula Wheel.
-Power Triangle.
NEC Tables section.
Color Code.
-Resistors color code.
-Phase wire color code.

National Electrical Code and "NEC" are registered trademarks of the NFPA

If you like to report bugs or suggestions, please send them to electricianbible@gmail.com