680.14 question Pool corrosive environment

Status
Not open for further replies.
B

bluecollar84

Senior Member
Location
US
9a705646a215734d73d3618219b0098b.jpg


Would anyone consider this pool equipment situation a corrosive environment per NEC article 680.14 ?


Sent from my iPhone using Tapatalk
 
bluecollar84 said:
Are you familiar with 680.14 ?


Sent from my iPhone using Tapatalk
Click to expand...

I take it you don't have a 2017 NEC. 680.14 is a brand new section and is clear as mentioned by Wayne

680.14 Corrosive Environment.
(A) General. Areas where pool sanitation chemicals are
stored, as well as areas with circulation pumps, automatic chlorinators,
filters, open areas under decks adjacent to or abutting
the pool structure, and similar locations shall be considered to
be a corrosive environment. The air in such areas shall be
considered to be laden with acid, chlorine, and bromine
vapors, or any combination of acid, chlorine, or bromine
vapors, and any liquids or condensation in those areas shall be
considered to be laden with acids, chlorine, and bromine
vapors, or any combination of acid, chlorine, or bromine
vapors.
(B) Wiring Methods. Wiring methods in the areas described
in 680.14(A) shall be listed and identified for use in such areas.
Rigid metal conduit, intermediate metal conduit, rigid polyvinyl
chloride conduit, and reinforced thermosetting resin
conduit shall be considered to be resistant to the corrosive
environment specified in 680.14(A).
Click to expand...
 
An open area under a wood deck would be much more subject to the intrusion of chlorinated water than the area under a impermeable surface deck which is probably what is in the picture.
But the Code makes no such distinctions.
 
bluecollar84 said:
This pool is a salt pool does that change anything ?


Sent from my iPhone using Tapatalk
Click to expand...

That may mean that no chlorine, bromine, or acid is used, but the Code does not care. The mention of those corrosives is a motivation for the rule, but is not part of the formal definition of the rule.

FWIW simple salt water can be corrosive by itself, at least to certain metals.
 
bluecollar84 said:
This pool is a salt pool does that change anything ?


Sent from my iPhone using Tapatalk
Click to expand...

As GoldDigger mentioned, the code doesn't make a distinction. Also, salt is sodium chloride, so I think salt water pools just get their chlorine from the salt.

Sodium chloride atoms aren't bonded very strongly, so when mixed with water, a lot of them separate into sodium ions and chlorine ions. The chlorine ions take an extra electron with them, so it creates positive sodium ions (Na+) and negative chlorine ions (Cl-).

I believe the charge is what makes the ions so corrosive, and it definitely makes the water a good conductor of electricity.
 
Status
Not open for further replies.
Top