When connecting a surge protective device, what should be avoided?

When connecting a surge protective device (SPD), it is essential to avoid unnecessary bends in conductors and using longer conductors than needed, as both can negatively impact the performance and reliability of the SPD.

Unnecessary bends in conductors can increase the inductance and resistance, making the SPD less effective at diverting surge currents and can also lead to physical stress on the conductors, potentially causing damage or failure over time. Sharp bends, in particular, can create hot spots and may compromise insulation integrity.

Using longer conductors than necessary can introduce additional impedance into the circuit. This added impedance can reduce the effectiveness of the SPD by causing delays in the response time to a surge event, or by dissipating energy in unwanted ways instead of allowing it to be safely diverted. Additionally, longer conductors can act as antennas, potentially picking up more electrical noise and interference.

Therefore, ensuring that conductors are as short and direct as possible, with gentle curves if bends are necessary, optimizes the SPD's ability to function correctly and protects the electrical system effectively.