Art 680.2 , 680.14

[BArmy]

As the NEC 2020 states in 680.2 & 14 the wiring methods must be corrosive resistant. I presume if an electrical panel is in the indoor pool equipment room with the pumps, chemicals and so forth it must be a 4X panel All wiring methods, lights, boxes, supports anchors, etc... Any rebuttals?

 

[petersonra]

As the NEC 2020 states in 680.2 & 14 the wiring methods must be corrosive resistant. I presume if an electrical panel is in the indoor pool equipment room with the pumps, chemicals and so forth it must be a 4X panel All wiring methods, lights, boxes, supports anchors, etc... Any rebuttals?

If it only actually says "wiring methods" than the enclosure and other things that are not "wiring methods" would appear not to be covered.

 

[BArmy]

So what is then considered a wiring method? Wiring methods are addressed in Art300.6 take a look. So piping going to a panel or a box is covered but not the box or panel,\!? perplexed

 

[BArmy]

Excuse me, not method but methods.

 

[Dennis Alwon]

I hear what Bob is saying but I have seen panel boxes corrode so badly that the busbar tabs were chalk. IMO, the intent is for the panel also but I am often wrong on these issues.

 

[BArmy]

Mike Holts Art 680 review that I downloaded, sort of skipped over 680.14, things that make you say Hhmm.

 

[petersonra]

I hear what Bob is saying but I have seen panel boxes corrode so badly that the busbar tabs were chalk. IMO, the intent is for the panel also but I am often wrong on these issues.

Is intent of the code ever enforceable?

I agree it is a good idea, but good ideas are not enforceable either, unless the buyer puts it in the contract.

 

[BArmy]

Lets go back to the original question. Art 680.2 (Corrosive Environment) states: Areas where pool sanitation chemicals are stored, handled, or dispensed etc.. Art 680.14 (Wiring Methods) Wiring methods in corrosive environments shall be listed and identified for use in such areas. Then it goes on to says what types of piping can be used is these environments. So the definition of wiring methods is only the piping means? So FLNC or LFMC is not allowed, wasn't mentiond. With that said- what IS a wiring method? As far as I can see it is defined in Art 300.6 and does not stop at piping types. Anyone know an email or phone # to the code making panel for this section?

 

[petersonra]

Lets go back to the original question. Art 680.2 (Corrosive Environment) states: Areas where pool sanitation chemicals are stored, handled, or dispensed etc.. Art 680.14 (Wiring Methods) Wiring methods in corrosive environments shall be listed and identified for use in such areas. Then it goes on to says what types of piping can be used is these environments. So the definition of wiring methods is only the piping means? So FLNC or LFMC is not allowed, wasn't mentiond. With that said- what IS a wiring method? As far as I can see it is defined in Art 300.6 and does not stop at piping types. Anyone know an email or phone # to the code making panel for this section?

If you have a question to ask you can submit it online. They will only give you a yes or no answer so you have to frame it so a yes or no answer suffices.

 

[LarryFine]

Maybe there's something about corrosive atmospheres in the applicable panel articles.

 

[eeinewton]

Hello - It sounds like I am not the only one with questions about "corrosive environments" in 680.14. I have a pool equipment (pump/filter) room, so wiring methods in the room need to be "listed and identified for use in such areas." 680.22(5) requires at least one 125V receptacle in the pool equipment room. Is there such a thing as a 125V receptacle that is listed for use in a corrosive environment?

 

[petersonra]

Receptacles are not wiring methods.

 

[infinity]

I agree with Bob, wiring methods are covered in Chapter 3. Panelboards and receptacles are in Chapter 4.

Part I. General Requirements
300.1 Scope.
(A) All Wiring Installations. This article covers general requirements for wiring methods and materials for all wiring installations unless modified by other articles in Chapter 3.

 

[LarryFine]

Is there such a thing as a 125V receptacle that is listed for use in a corrosive environment?

No, but yes for boxes and device covers.

 

[suemarkp]

WR would be a first step. Water can be corrosive and WR is for wet environments.

 

[Another C10]

but I am often wrong on these issues.

Can I borrow that phrase, I seem to need that quite often in this forum ..

 

[Another C10]

Receptacles are not wiring methods.

I'm sure the code would argue that somewhere, stating its a method in harnessing a potential difference with the intent to utilize for a given load consumption.

 

[Another C10]

Is there such a thing as a 125V receptacle that is listed for use in a corrosive environment?

Add a cord cover ... just a thought

Just do a google search

Locking Devices, Twist-Lock®, Corrosion Resistant Single Flush Receptacle, 20A, 125V AC, 2 Pole, 3 Wire Grounding, Yellow​

By Hubbell Wiring Device-Kellems
Catalog ID: HBL23CM10
Locking Devices, Twist-Lock®, Corrosion Resistant Single Flush Receptacle, 20A, 125V AC, 2 Pole, 3 Wire Grounding, Yellow

 

[kwired]

Add a cord cover ... just a thought

Just do a google search

Locking Devices, Twist-Lock®, Corrosion Resistant Single Flush Receptacle, 20A, 125V AC, 2 Pole, 3 Wire Grounding, Yellow​

By Hubbell Wiring Device-Kellems
Catalog ID: HBL23CM10
Locking Devices, Twist-Lock®, Corrosion Resistant Single Flush Receptacle, 20A, 125V AC, 2 Pole, 3 Wire Grounding, Yellow

So you put that receptacle in a PVC box with PVC cover, that has short nipple into panelboard with a stainless/gasketed cabinet. You might even duct seal the nipple, but that don't make the bus bars inside any less corrosion resistant, just keeps that environment away from them better than a typical NEMA 1 cabinet does. Over time they still are effected. but one maybe needs to consider what sort of time may be realistic in some situations. JMO