SHOREDITCH, England - Aug. 11, 2019 - Cable Calculator App Update.

Pro Certs Software have updated their cable size calculator for improved usability, a smoother user experience and bug fixes. A cable size calculator is a handy electrical app to have at your side for when the need arises to carry out a quick cable size calculation while out on site, during a site survey or in the office for circuit design...

The cable calculator software incorporates an swa cable calculator which also calculates the cable volt drop, expected Zs value and r1+r2.

Cable Calculation Software.
Input your design parameters such as design current, length of circuit, supply voltage and Ze.

Then select from the built-in options for the circuit maximum volt drop % and earthing system type.

Earthing system options include:
• TN-C-S
• TN-S
• TT - No RCD
• TT - 30mA RCD
• TT - 100mA RCD

RCD TT Max Zs Values Supported.
As with most TT earthing systems it can be extremely difficult to achieve a low enough Ze reading to satisfy the maximum permitted Zs value of the circuit protective device, hence RCD's are required.

This cable calculation software includes support for TT earthing systems, the TT earthing system options supports using the RCD / RCBO maximum permitted Zs values instead of the MCB values, such as 1667 for a 30mA RCD enabling a more precise cable size calculation.

Cable Calculation Formulas.
The cable calculator incorporates all the common protective devices from MCB's, RCBO's and fuses which also supports manufacture specific MCCB's and ACB's maximum Zs values, allowing the user to manually input the required maximum Zs value for the specific device.

The cable calculation formula used is based on BS 7671 18th edition wiring regulations which also supports correction factors, Zs values and volt drop.

For the common protective devices the maximum permitted Zs value is pre-programmed in to the app removing the need to look up the Zs charts for each device.

SWA Size Calculator.
The cable calc app includes many different cable types including 70oC SWA and 90oC SWA cables.

Cable Current Carrying Capacity Calculator.
Installation methods for the SWA cable size calculator includes:

• C - Clipped Direct
• E - Free Air or Tray
• D - Buried in Ducting or Directly in the Ground

A useful feature for an SWA cable calculator.

For more info visit:
https://www.procertssoftware.com/cable-calc