A design specifies a listed surge protective device at the service. Which installation principle helps it perform as intended?
- ARemove grounding electrodes
- Use listed equipment with short conductors
- CInstall an unlisted plug strip inside the panel
- DIncrease breaker size instead
Where to look it up
https://www.se.com/us/en/faqs/FAQ000240088/
Why B is correct
Use the specified listed equipment and follow its connection instructions, keeping leads appropriately short. Longer leads add impedance and can increase the voltage reaching protected equipment during a surge. Neither a larger breaker nor an unlisted strip substitutes for the designed SPD.