Lightning Strikes and Electrical System Protection

I have had lightning strikes that have blown out sections of the PVC conduit, What can I can do to prevent lightning damage. © By: Dave Rongey

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Electrical Protection Against Lightning Strikes

Electrical Question: I have had two underground PVC conduit runs going 120′ from inside the house to a boat house on a salt water canal.

• Large pine trees 10′ from boathouse. Conduits are about 8″ underground and exit a sea wall 6″ above the water level and then travel under a dock. One supplies 110V to lights and PWC lift.
• Other conduit supplies 220V to boat lift motors. Wires over sized for loads. In 2 months time I have had 2 lightning strikes that have blown out 1 to 3 inch sections of the PVC conduit above the water level.
• One strike blew up GFCI for 220V lift and transformer in remote boat lift control and second strike blew out my conduit and neutral wire in the 110V circuit.
• Is there something I need to do like wrap the above water conduit in wire and take wire into the water or anything else I can do to prevent lightning damage. Should I turn off power in house when not in use?
• Still it blew my neutral 110V without tripping circuit breaker. Any tips to reduce odds for lightning strikes and damage.

Background: Dana, a Homeowner from Lynn Haven, FL.
Additional Comments: Enjoyed articles I saw while researching my issue.

Dave’s Reply:
Thanks for your electrical wiring question Dana.

Electrical Damage from Lightning Strikes

Lightning strikes can cause a lot of serious problems with electrical wiring and the electrical components. When a home has been struck by lightening and the electrical systems are not working right it is advisable that the electrical power should be turned off.

Contact a qualified electrical contractor who can perform visual inspections and electrical tests to identify and make the necessary repairs as needed.

Consider the following items that could help prevent future damage from lightning strikes.

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