NEMA Provides Guidance on Water-Damaged Electrical Equipment
September 30, 2008 // Published as a news service by IHS
According to the National Electrical Manufacturers Association (NEMA), electrical equipment exposed to water can be extremely hazardous if reenergized without proper reconditioning or replacement.
Reductions in integrity of electrical equipment due to moisture can affect the ability of the equipment to perform its intended function.
Damage to electrical equipment can result from flood waters contaminated with chemicals, sewage, oil and other debris, which will affect the integrity and performance of the equipment.
Ocean water and salt spray can also be particularly damaging due to the corrosive and conductive nature of the salt water residue. Distributors of electrical equipment should not supply any inventory that has been subjected to water damage.
Evaluating Water-Damaged Electrical Equipment, a NEMA publication, provides specific guidance on whether products that have been exposed to water should be replaced or reconditioned.
The publication provides information to building owners, maintenance workers, electrical inspectors, electricians and users of electrical products on how to evaluate electrical equipment that has been exposed to water through flooding, fire-fighting activities and hurricanes.
It includes a table showing the requirements and recommendations associated with various categories of electrical equipment that have been subject to water damage.
A working knowledge of electrical systems and the equipment in question is needed to evaluate damage due to contact with water, said NEMA. The original manufacturer of the equipment should be contacted if questions arise or recommendations are needed. In many cases following water damage, replacement may be necessary. After consultation with the manufacturer, some larger types of electrical equipment may be reconditioned by properly trained personnel.
NEMA is providing copies of this document to electrical inspectors, building officials and others in the areas affected by recent hurricanes. NEMA field representatives are also making copies available during their visits to the Gulf Coast and Midwest and to other communities throughout the U.S.
NEMA is inviting organization such as the International Code Council (ICC) and the National Joint Apprenticeship and Training Program of the International Brotherhood of Electrical Workers to make this free document available to its constituents.
A complimentary copy of Evaluating Water-Damaged Electrical Equipment may be downloaded by visiting the NEMA web site.
Source: National Electrical Manufacturers Association (NEMA).