## Cable Capacitance Calculator

Use this calculator to estimate the capacitance from one wire to all other wires in your cable. This calculator takes into account your fixturing length, cable length, and the presence of shields and will return an estimate of the capacitance a test will see from one wire to all other wires in the cable under test.

#### Step 1: Estimate the Capacitance

##### a) Units of Measurement

 All lengths in FeetMeters

Estimated Capacitance of Fixturing: Estimated capacitance of fixture wiring is ___ pF/Foot (wire to wire capacitance). Total length of fixturing connected to target wire   Feet (usually 2x the fixturing length between the DUT and tester)
##### c) Your Device Under Test

Estimated capacitance of this wire net: Target wire is                A Shield        A discrete wire        A wire within a ribbon cable        One wire of a twisted pair Other wires in cable/bundle                Any shields        Multiple wires but no shields        Only one other wire Estimated capacitance is ___ pF/Foot (target wire to all other wires). Total length of wire   Feet
##### Estimate of Total Capacitance

Estimated combined fixture and DUT capacitance:__ nF

#### Step 2: Estimate Hipot Safety

##### DC Hipot Information

 For testers that limit hipot energy and charge the highest DC voltage that might be intrinsically safe is ___ Volts.
##### AC Hipot Information

AC hipot frequency

Total AC Current
Test VoltagemA AC RMSmA PeakIntrinsically Safe?
______
______
______
______