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electrician2.com Compact Conductor Racewayfill Calculator
by electrician2.com

This program calculates the number of same size conductors using the .8 roundoff method.
In the Auto Mode this program limits the fill to 40 per cent for over 2 conductors,
31 per cent for only two conductors, and 53 percent for one conductor.
Values are taken from NEC Chapter 9, Table 5A for compact conductors. THHN No. 8 AWG sizes are not included.
(copyright 2008 Gerald C Newton)

Enter conductor information starting at the top of the form.
ALL AREAS ARE IN SQUARE INCHES.

Select
Insulation

Select Size

Enter No.
Conductors

Wire Area

Total Area

(1)

(2)

(3)

(4)

(5)

Total:

Grand Total Area:

Select Raceway

Select Fill Value

Auto

60 Per Cent (nipples)

25 Per Cent (sealoffs)

Minimum Raceway Size:

Allowed Raceway area:

Available Raceway area:

Maximum number of same size wires at the Per Cent Fill:

Per Cent Fill:

JAM RATIO (for 3 conductors only):

JAM RATIO between 2.8 and 3.2