Code Enforcement

Jon Willett in Code Enforcement3 days ago (Show more)

Code conflict: NFPA 70B and 87 (this wasn't answered, I clicked the wrong link)

We make process heaters and sometimes, those are electric immersion heaters. NFPA 70b, 425.22(B) states a 48 amp limit per circuit. However NFPA 87 (which we follow for all of our other heaters) 8.17.1.4 says resistance heaters DON'T have to be subdivided into circuits of 48 amps or less. How can we decide which code to follow? We seem to be… (Show more)

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John Hall (to Jon Willett) 2 days ago (Show more Show less)

Our state has not adopted the 2017 NEC yet. That will not happen until late 2020. However, it appears that the 2017 does require it for the products you manufacture. The general rule is that if there are two standards in force for a given item, the more restrictive standard takes precedent. Since you probably market products in more than a single…

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Nicholas Weiss in Code Enforcement2 days ago (Show more)

NFPA 58 overhead clearance requirements

NFPA 58 What is the minimum require vertical distance between the pressure relief valve and a overhead wooden structure (such as a deck) on a 100lbs tank at a single family residence. (Section 6.4.4.1) Illustration 6.2 shows an 8' high deck from grade but this appears to be for reference only. Can the tanks be placed under a deck… (Show more)

Jack Callahan in Code Enforcement3 months ago (Show more)

Hello, I have a question on circuit breaker size for maximum nameplate ratings. If I have a product with a user selectable current setting between 30A - 100A, I would like to set the amperage to 50A on the device.

My main question is, if I intend to only use the appliance at 50A and select that on the product itself as well as wire it to a 50A circuit, am I breaking any code violations by not installing the product on a 100A circuit (maximum nameplate rating of the product)? Product is a non-continuous device. I have heard in some locations that it is… (Show more)

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Jack Callahan (to Nick Sasso) 3 days ago (Show more Show less)

This is for a tankless electric water heater. It is not yet listed, but in the process right now. To rephrase the question, can a product that has user-selectable amperage settings be set to 50A (locked) on the device and wired to a 50A breaker with coordinating wiring if the product has a maximum nameplate of 100A?

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Victor Cruz in Code Enforcement1 week ago (Show more)

NFPA-2001, Iron Pipelines (ASTM A-36) Maintenance

Dear Friends: About the maintenance of a System that meets the NFPA-2001, can any one tell me: Is there a maintenance procedure for the Iron pipelines? my concern is for the rust formation inside the pipe during the years. All my systems are protecting Data Center facilities, so for that reason in case of a discharge of the Novec 1230, the… (Show more)

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nocivus (to Victor Cruz) 4 days ago (Show more Show less)

Yes you could. Although I don't think that pipe will be more corrosion resistant than the usual steel pipes used for fire suppression systems. Preferably for a harsh environment would install galvanized ASTM A53 pipes with a good coating if necessary.

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Elsa Lopez Diaz in Code Enforcement6 months ago (Show more)

NFPA-2001 QUESTION

NFPA 2001 Clarification. We are under an inert gas system design (IG-541) . Our system is class C fire and according to NFPA-2001 table A.5.4.2.2.b minimun design concentration of 38.5% shall be used. My concern is related to concetration target to calculate the discharge time. There are two paragraphs on NFPA-2001 that will divert to a… (Show more)

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Milton Werner (to Victor Cruz) 5 days ago (Show more Show less)

Victor: If they are pre-engineered systems, the components must maintain the listed requirements in accordance with Section 1.4.2.1 of NFPA 2001. Piping is a component. Section 4.2.1.1.3 requires piping of the pre-engineered system to be designed in accordance to the limitations of the manufacturer's listed installation manual. You should…

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Francisca Saez in Code Enforcement2 weeks ago (Show more)

NFPA 24, AWWA C906-15 standar question

Good day every one, i have a question on NFPA 24, chapter 10, Polyethylene , sends me to AWWA C906 , that standar talks about the use of PE2606 PE2708 PE3608 PE3710 PE4608 PE4710. Does it mean that if i use a different type of PE(neither of wich i have alredy mentioned) , i wont be respecting the standard? I really apreciate if someone could… (Show more)

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Francisca Saez (to nocivus) 1 week ago (Show more Show less)

Do you have AWWA C906-15 standar? If you have it i really appreciated if you could sent it to mail: maria.saez@alumnos.usm.cl

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Bobby Pellegrin in Code Enforcement2 weeks ago (Show more)

Device for device Fire Alarm replacement

Dormitory built in 1960 with no major renovation being done. Fire Alarm system installed in 1980. We are getting ready to replace the fire alarm system due to the current system being discontinued. I thought we could do a one for one replacement of the system and not have to have a system meet the current 2015 NFPA 72. I have a response from… (Show more)

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Milton Werner (to Robert Reichert) 1 week ago (Show more Show less)

Robert: We don't know who you are as there was no profile information on the Xchange. Maybe a voice in the background. I can just totally disagree in terms of the NFPA codes and standards. This is a national forum. Local AHJs may have other ordinances and laws they comply with. I am sure they have some appeal process and should be able to…

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Pamela Smyth in Code Enforcement3 weeks ago (Show more)

Outdoor Storage of Pool Chemicals

I am doing research on hazardous materials and writing of ordinances. I find that most cities do not permit pool construction/electrical supply wholesale businesses selling pool chemicals on the side to store hundreds of gallons of chlorine bleach and muriatic acid outdoors year round and unprotected from the elements on open parking lots. Nor… (Show more)

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cda cda (to Pamela Smyth) 2 weeks ago (Show more Show less)

I am far an expert in corrosives and oxidizer but will be glad to look at it

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W. Burlingame in Code Enforcement2 months ago (Show more)

Nonsupervised Wireless Interconnected Alarms

Is anyone out there aware of a manufacturer who has a device that meets the 100' requirement of NFPA 72 section 29.7.8.2.1? AHJs are reporting that there are a number of installations in dwelling units where the manufacturers' documentation does not support this.

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W. Burlingame (to Ron Schaffhauser) 2 weeks ago (Show more Show less)

I would be interested in looking at what you have submitted. From what I can see, there is no test standard as required by the section language of "shall comply with ... as tested to". I have AHJs rejecting installations, installers asking how to comply and lawmakers looking to repeal the fire safety code. KB

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Randall Schievelbein in Code Enforcement3 weeks ago (Show more)

install of equipment

Can an licensed apprentice (without supervision of a journeyman) install (run conduit and connect to the existing disconnect) a new piece of equipment in the facility he is employed. thanks

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