The elec calc™ software calculates the maximum let-through energy on all the conductors and compares it to their thermal withstand value (according to the formula k²×S²). This verification applies to the phases but also to the neutral and to the PE. If this condition is not met a thermal stress error is displayed on the cable. In the event of a thermal stress problem, it is always possible to oversize the cross-section of the conductors, thus increasing their admissible thermal stress. However, other possibilities can overcome this increase in section.
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