Unplugging when lightning threatens is the safest thing you can do to protect your system.
I rewired my house with Square D's top of the line commercial system at the meter with a 200-amp switch for the house and a 100-amp switch for the AV system. A dedicated armored cooked and cryo'd 00 awg cable runs 85 feet from the 100-amp switch to a dedicated Square D QO panel with 5 dedicated armored cooked and cryo'd 10 awg cable runs to cooked and cryo'd Hubble hospital grade outlets. The meter has its own surge protector, the QO panel has Square D's top of the line surge protector for lightning prone areas and each outlet connects to a Transparent PowerIsolator that supposedly clamp surges in pico-seconds instead of nano-seconds.
Still, I unplug.
I rewired my house with Square D's top of the line commercial system at the meter with a 200-amp switch for the house and a 100-amp switch for the AV system. A dedicated armored cooked and cryo'd 00 awg cable runs 85 feet from the 100-amp switch to a dedicated Square D QO panel with 5 dedicated armored cooked and cryo'd 10 awg cable runs to cooked and cryo'd Hubble hospital grade outlets. The meter has its own surge protector, the QO panel has Square D's top of the line surge protector for lightning prone areas and each outlet connects to a Transparent PowerIsolator that supposedly clamp surges in pico-seconds instead of nano-seconds.
Still, I unplug.