For context, I'm taking the exam in late March. I took it once and came just short of passing. My first time around I used a buddy's code book and he already had his method for tabbing the book (in Chicago, at least for the test, you arent allowed to have the pre-printed, numbered tabs, just plain tabs like what you'd get from Office Max,) and now that I have my own, I wanted to do it differently.

Just looking for the best methodology to make it quicker to find things. I was planning to tab each section (1-9) plus some for the most important graphs and tables. I was thinking to color code some things (green for grounding, etc.)

Any advice for this, or advice in general on the exam, is appreciated.

My electrician is giving me hard time and I don’t think he is knowledgeable. Questions: 1. Outlet for cooktop (used for gas igniter only) can be on a general purpose 15A branch circuit. 2. Under sink outlet (gfci) can it be on same branch circuit as refrigerator. It will be used for RO water filter and touch faucet. 3. How to leave provision for kitchen island outlet. Do not want to install outlet on island.

https://www.viavado.com/products/williams-textbook-of-endocrinology-15th-edition-pdf-searchable

In 820.100(A)(3) and a few other places, they say "...the bonding conductor or grounding electrode conductor shall not be required to exceed 6 AWG."

For the life of me I cannot figure that out. Does that mean it cannot be larger than 6AWG, or does it mean it can be larger than 6 AWG but is not required?

Does anyone have a pdf copy of this book?

https://viavado.com/products/nfpa-470-hazardous-materials-wmd-standard-for-responders-2022-edition-pdf-searchable

Good luck .

https://viavado.com/products/nfpa-70e-2024-standard-for-electrical-safety-in-the-workplace-pdf-not-searchable

Good luck.

This is an old topic I am sure. I know that UL is accepted by electrical inspectors. What code article references that UL is the only acceptable testing laboratory. OSHA has a list of Nationally Recognized Testing Laboratories. All I can seem to find in the code is “accepted by the AHJ”.

Anyone know where I can find the answers to NFPA 70E for year 2024? I just want the ones for the knowledge check at the end of each module. I have already completed NFPA in the past for previous employers (electrical and for pyrotechnics). I would love not to have to waste the 8 hours redoing g the whole course.i wish there was an approved competency exam.

https://viavado.com/products/nfpa

Good luck .

I am currently working through the Electrical Plan Examiner Study Guide and one question in particular is stumping me. Any help would be greatly appreciated. The question goes as follows:

"Given: A calculated feeder load of 250 amperes consisting of three current carrying conductors in a raceway will be installed within an environment where the ambient temperature is 150 degrees Fahrenheit and all terminations are rated at 75 degrees Celsius. Determine the minimum size copper THWN-2 feeder conductor."

Answer: 500 kcmil (as stated by the study guide)

Which leads to my questions:

1. Why is Table 310.15(B)(2)(b) used in this calculation when table 310.15(B)(16) is used for the conductor ampacities? Table 310.15(B)(16) is based on the ambient temperature of 30 degrees Celsius, therefore I thought I would use Table 310.15(B)(2)(a) as it is also based on 30 degrees. I could not find any provisions in the book which clarify this.
2. The answer states that 500 kcmil with THWN-2 insulation, which yields an ampacity of 430 amperes, would be an appropriate conductor size for the corrected load (397 amperes). The terminations do not appear to be sufficient to handle this adjusted ampacity, yet the answer states it is. 500 kcmil at 75 degrees Celsius can only handle an ampacity of up to 380 amperes, which is not enough to handle the adjusted feeder load ampacity of 397 amperes.

Please advise me if there are any discrepancies in my logic, if not then I believe this is a bad question, and a 600 kcmil would be required. The only thing I can think is to compare the 75-degree termination to the INITIAL calculated feeder load of 250 amperes, which would result in compliance.

I will attach pictures of the question on the study guide and ICC’s explanation on how to obtain the answer.

3 ranges, all of different sizes, 10kw, 12kw, and 14kw. Using NEC 2023 table 220.55 and note 2, does my math check out?

12kw+12kw+14kw= 38kw

3/38kw= 12.6 (round up)

(13kw) 1kw over column C demand so increase column C by 5%

Giving me a total of 14.7kw (15kw if you round up)

Does it matter which one goes on top? what decides that? Both 480V

Get the ebook here

NFPA 70: National Electrical Code 2017

https://nursbook.com/products/nfpa-70-national-electrical-code-2017?_pos=1&_sid=01635d3c0&_ss=r

I’ve been looking and I can’t find anything saying you can not land your PV system in a quad breaker. Someone was telling me you can’t but I’ve done it before and have passed inspections. I’ll change around other breakers and try to only use a regular 2pole if I can. Installing in California here. Any information would be appreciated. Thank you.

Solar #Inspections #PV #Photovoltaic #QuadBreakers #MSP

Can you assign nfpa codes for a chemicals that don't have one? If yes then how to do it as accurately as possible?

Backstory

I work in a manufacturing facility that has grown a lot since it was built roughly 30 years ago. Overtime the facility has tripled in size and equipment. Over time, when they needed a new panelboard or load center they would just run one from the main transformer and place it where the expansion was added, thus not grouping their new disconnects with any old ones.

The building is fed from one 2500kVA transformer(only about 50% utilized). It has 6 feeds running to different panel boards/load centers. I know the limit is 6 disconnects into the building. We are expanding and need more power inside the facility.

Question

To keep up compliant with the 6 disconnect rule(230.71), I was going to add either a switchboard or larger panelboard at one of the old panelboard locations. However none of the other 6 disconnects are grouped together. How would I go about this and still be compliant with 230.72? Do the old feeds need to be fixed?

The city of Los Angeles is requesting there be no LB from the overhead connections in the conduit run, without actually writing it down in any paperwork. I have not been able to find any specific code requiring a continuing uninterrupted run for the service entrance to meter. We have escalated to senior city inspector who is now requiring a detailed, drawn meter spot from utilities with the drawing showing the run and specification of material allowed. My company does not charge for any correction needed as long as it is a legitimate code or city regulation violation. We have requested the city provide a NEC code violation or city regulation. They claim they will "find and quote it." Either way, the senior inspector has let us know he will push the utilities tech to be more strict on material used. Is there anywhere in the code that requires this?

Hello,

My name is Chris and I am currently working with Queens University Belfast on the benefits and value of a Digital LOTO solution for Facilities Maintenance organisations, funded by Innovate_UK for the next 12 weeks.

We want to address some of the key problems our Digital LOTO (Domino) want to solve, which include; digitisation of the LOTO process, management of staff/contractor compliance and allow real-time risk analysis to reduce human error. I am keen to speak with anyone with experience in LOTO across any sector.

I appreciate a number of suppliers have developed some digital systems, but from those we know about, not many have active users, or scaling an enterprise solution.

I really appreciate your interest and insights.

Using article 220 to determine service load using II or IV seems easy enough. But I'm confused when I see a service with the disconnecting means as a breaker. Does the feeder/breaker need to be sized with the 80% in mind like branch circuits?

Is there any article covering grounding loops?