A new Section requires a warning sign at boat docks or marinas. 555.24 Electric Shock Hazard Signage. A permanent safety sign is required to give notice of electrical shock hazard risks to persons using or swimming near a boat dock or marina, and safety signs must meet all of the following requirements (Fig. 19): (1) The sign must warn of the hazards using effective words, colors, or symbols or combination in accordance with 110.21(B)(1) and be of sufficient durability to withstand the ...

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