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wiredInUSA - August 2015 40
Calculating cable
Following its successful launch in France in
2014, Nexans’ online EasycalcTM sizing tool
is now available in Belgium. The Belgian
version has been specifically developed to
suit the local needs of projects in Belgium
regarding national installation standards,
and facilitates the use of cables that
comply with local standards.
The tool also takes into account the
specific sizing challenges associated with
fire-resistant cables, since the regulation
simply advises that the designer should
consider the higher resistance due to fire
and the corresponding voltage drop. This
can mean that using the standard formula
to calculate the voltage drop will often
result in the specification of an inadequate
cable size. Practice shows that installers
and engineers find it difficult to determine
the size in this situation.
To calculate the cable sizing of fire-resistant
cables, the Belgian version of Easycalc
draws on the Wiedemann-Franz method,
generally perceived by the Belgian cable
industry as “good practice”.
Easycalc is accessible from the Nexans
website and is available as a tablet or
smartphone application. The new version
allows users to switch between French and
Belgian-specific sizing.
Nexans plans to deploy Easycalc to other
countries, with appropriate country-specific
options and rules.
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