Electrical Engineering Calculators



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  • All Electrical Engineering Formulas List. Cable Length from Sag, Span. Formula: L = S + ((8. d 2) / (3. S)) Where, L = Cable Length S = Cable Span d = Cable Sag. Using this Online Electrical Calculator the parallel Capacitors calculation in a circuit is made easier here. Related Calculator: Parallel Capacitor Calculator; Horsepower (HP.
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Below tool will assist to perform conduit sizing calculation.

INPUT


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Total Cable Area:
Total Conduit Area:
Calculated Percent Fill:
Allowable Percent Fill:
RGS or RMC Conduit Size:
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The type of conduit applicable is Rigid Steel Conduit (RGS) and Rigid Metal Conduit (RMC). RGS or RMC sizing will be in compliance with table 1 of NEC Chapter 9:

Total Cable Area / Total Conduit Area < Allowable Percent Fill

where:

Also read: Voltage Drop Calculation Quick shortcut for snipping tool mac.

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Conduit sizing calculation result is based on normal conditions of good practice cable routing and alignment of conductors. For example, the total number of bends between 2 pull points can not exceed 360o or the maximum number of conductors in a connection box.

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Conduit size, internal diameter and internal total area is as below: