AC Formulas

Single Phase Check Values

Find formulas for these calculations in Reference Formulas Appendix page 7 and 8.

Find practice problems HERE.

These check values work for all AC circuits if single phase. 

Single Phase

P = 6372 watts

I = 30.6439 amps

E = 208 volts

pf= .8

W = 6926 watts

VA = 8658 volt amperes

eff = .92

HP = 6.28

R = 5.43 ohms

XL = 4.0725 henries

Z = 6.7876 ohms

VAR = 4156.5 VAR's

sin of the phase angle = .6

cos of the phase angle = .8

tan of the phase angle = .75

angle in degrees = 36.8698

HZ  = 60 cycles

 
 

Many electrician workbooks and practice exams are now available 
as digital downloads for immediate use. 
Click HERE to see what is available.

Products For Sale
2006-2011 David U. Larson
dularson@bellsouth.net
Companion Website to ElectricianEducation.com and
TechnicianEducation.com
http://www.2011nec.com
Other websites by David U. Larson which may be of interest:
http://www.visiteuropeonline.com

http://www.oldpostcardsforsale.com
http://www.stampdealerlots.com 
http://www.houseflipguide.com
http://www.swedenroots.com
http://www.greenfieldvillageonline.com