
Raceway Percentages Check ValuesFind formulas for these calculations in Reference Formulas Appendix page 30.Find practice problems HERE.Check values based on a 1" EMT raceway 10' long with 6 #10 THW conductors.total area = .864 square inches (Chapter 9 Table 4)useful area % = 40%useful area = .346 square inches (Chapter 9 Table 5)Used % = 16.875Useful % = 40Used area = .1458unused area = .2002unused % = 23.125Remaining useful area = .2002Remaining useful % = 23.125

Many electrician workbooks and
practice exams are now available
