Ensuring Dock Safety: A Quick Guide to Dock Wiring Inspections in Charleston

Being a dock owner in Charleston comes with many perks, from enjoying the scenic waterways from the comfort of your own coastal property to taking part in the vibrant boating culture.

Ensuring the safety of your dock's electrical wiring is crucial for protecting both people and property. Because exposure to the elements is increased on docks, the electrical components corrode more quickly than normal, requiring regular inspections to identify potential hazards and prevent accidents. In this quick guide, we'll outline seven key things you can check today to ensure your dock wiring meets safety standards, referencing the NFPA 70, National Electrical Code (NEC) (2020) Section 555.

1. Means of Electrical Disconnect at the Head of the Dock (NEC 555.4):

Begin your inspection by verifying the presence of a means of electrical disconnect at the head of the dock. This is a critical safety feature, allowing for a swift shutdown in case of emergencies or maintenance requirements. 

2. Required Signage (NEC 555.10):

Ensure that your dock has prominently displayed signage explaining the dangers of electricity in the area. This signage should be visible from all approaches, serving as a constant reminder to exercise caution.

3. Protection of Boat Hoist Motors and Controls (NEC 555.8 & 9):

Check that boat hoist motors and controls are adequately GFCI protected and positioned above the datum plane. Compliance with these regulations ensures the longevity and safety of essential equipment.

4. Outlet and Connection Heights (NEC 555.30 (A-C)):

All outlets and connections should be a minimum of 12 inches above the deck and not below the datum line. This prevents potential water damage and ensures a safe distance from the water's surface.

5. GFCI Protection for Receptacles (NEC 555.33(B)(1) & (2)):

Confirm that all receptacles and power outlets are equipped with Ground Fault Circuit Interrupter (GFCI) protection. GFCIs are essential in preventing electrical shocks and are mandatory for dock safety.

6. Secure Enclosures and Bonding (NEC 555.33(B)(1) & (2)):

Ensure that enclosures are securely fastened to structural components and not solely supported by conduit. Additionally, all metal parts in contact with water, metal piping, and non-current-carrying metal parts likely to be energized must be properly bonded with #8 AWG copper and UL-listed lugs.

Other Things to Look For:

• Corrosion and Damage: Watch for corroded metal electrical enclosures, exposed wires, damaged conduits, or faulty circuits. Addressing these issues promptly prevents further deterioration and potential hazards.

• GFCI for All Circuits: Confirm that all circuits are protected by GFCIs, providing an additional layer of safety against electrical accidents.

Things to Have Checked by a Qualified Professional:

• Copper Conductors, Service Wires, and Grounding: Engage a qualified professional to inspect copper conductors for all circuits, ensure proper 4-wire service wires sized for voltage drop and distance, and verify correct grounding.

• Flooded equipment: if a storm or extra high tide have submerged any of your electrical components, have them checked out right away. 

Prioritizing dock safety today ensures a secure and worry-free environment for all dock users tomorrow. Regular inspections are vital to maintaining a safe dock environment. If any of the inspected items are missing, damaged, or haven't been inspected in over three years, it's essential to call Safewater Electric today to schedule a comprehensive inspection.