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For EC&M Magazine
By Mike Holt, NEC® Consultant
Here's the follow-up to yesterday's newsletter.
This includes the answers to the questions sent, so you can see how you did.
Figure 01
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Figure 01
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For EC&M Magazine
By Mike Holt, NEC® Consultant
Here's the follow-up to yesterday's newsletter.
This includes the answers to the questions sent, so you can see how you did.
Note: The answers to these questions are based on the 2020 NEC.
Q1. What are the Code requirements for receptacle outlets used for electric vehicle power export (EVPE) equipment?
A1. AC Electric Vehicle Power Export, (EVPE), Receptacles [625.60]
AC receptacles installed in electric vehicles and intended to allow for connection of off-board utilization equipment must comply with:
(A) Type. The receptacle must be listed.
(B) Rating. The receptacle outlet must be rated a maximum 50A, 250 volts single phase.
(C) Overcurrent Protection. The overcurrent protection must be integral to the power export system.
(D) GFCI Protection for Personnel. Ground-fault protection for personnel must be provided for all receptacles.
Note: There are various methods available to achieve GFCI protection.
Q2. What does the NEC consider to be a corrosive environment regarding swimming pools?
A2. Corrosive Environment [680.2]. Areas where pool sanitation chemicals are stored, handled, or dispensed, and confined areas under decks adjacent to such areas, as well as areas with circulation pumps, automatic chlorinators, filters, open areas under decks adjacent to or abutting the pool structure, and similar locations. Figure 01
Note: Sanitation chemicals and pool water are considered to pose a risk of corrosion (gradually damaging or destroying materials) due to the presence of oxidizers (for example, calcium hypochlorite, sodium hypochlorite, bromine, and chlorinated isocyanurates) and chlorinating agents that release chlorine when dissolved in water. More information about swimming pool chemicals can be found on or in the following:
(1) Environmental Protection Agency website
(2) NFPA 400, Code for the Storage of Liquid and Solid Oxidizers
(3) Advisory: Swimming Pool Chemicals: Chlorine, OSWER 90-008.1, available from the EPA National Service Center for Environmental Publications (NSCEP)
Q3. What does the NEC mean by a fountain, as associated with swimming pools?
A3. Fountain [680.2]. An ornamental structure or recreational water feature from which one or more jets or streams of water are discharged into the air, including splash pads, ornamental pools, display pools, and reflection pools. The definition does not include drinking water fountains or water coolers.
Q4. What distinction does the NEC make between an immersion pool and a swimming pool?
A4. Immersion Pool [680.2]. A pool for ceremonial or ritual immersion of users, which is designed and intended to have its contents drained or discharged.
Q5. How does the Code define a splash pad as opposed to swimming pools?
A5. Splash Pad [680.2]. A fountain with a pool depth 1 in. or less, intended for recreational use by pedestrians. This definition does not include showers intended for hygienic rinsing prior to use of a pool, spa, or other water feature.
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