We are wiring a new two-story self storage building in New Jersey. The steel is done and the concrete decks are poured. We went in and installed temporary wiring to approved LED construction lights on each floor as well as GFI temporary receptacles. We used 12/2 NM cable as the temporary wiring method from the panel board to each light location.… Show more
I have a question about storage of lithium batteries. Our company converts gas powered commercial vehicles into electric, we will possibly have on hand 108, 32kwh, 333v nominal, Lithium Nickel Manganese Cobalt Oxide (LiNiMnCoO2) — NMC batteries. What if any are the storage requirements with these batteries or any lithium battery
As per NFPA 14 (188.8.131.52.2) if a standpipe is serving 3 hose reels at a particular floor then we must accommodate 750 gpm thru it. If I have a building that is spread over a large area but a pump that is limited to 500 gpm, does this mean I have to give separate stand pipes to every 2 hose reels? There are many hose reels installed but if I… Show more
What is the occupancy classification of an emergency generator building? The building is 250 sq. ft. and it is dedicated to the house the emergency generator. I'm contemplating Industrial occupancy and Storage occupancy. Thanks, everyone.
Pertaining to rope rescue systems I am looking for this "System safety factor" ratio that I hear about in fire service but can't seem to find any numbers anywhere. In NFPA 1670 A.3.3.142 states what a safety factor is but no ratio is given. For example I hear "the safety factor must be 10:1 or 15:1". Where might I be able to find this… Show more
The sign must have been building safety policy to remind people to comply with the fire code. I have not seen any fire code that directs a sign to posted. Excerpt from the 2016 California Fire Code: 5003.10 Handling and transportation In addition to the requirements of Section 5003.2, the handling and transportation of hazardous materials…
A few months ago, NFPA told me the following regarding the size of the special hazard ratings in comparison to the number ratings for NFPA 704, “The minimum dimensions of the hazard ratings (which include the special hazard symbols) are specified in figure and table so as long as they scale within those minimum dimensions, that is… Show more
Photo Credit: Associated Press It was with heavy hearts that four siblings, ages nine months to eight years old, were laid to rest over the weekend. The children were four out of the five that were killed in a home daycare fire in Erie, Pennsylvania. The fifth child, a two-year-old boy, will be laid to rest today. The cause of the fire is… Show more