What is the proper PPE for Meg testing some 2000v rated 600kcmil AL wire? My client is requesting that we wear FR clothing to meg test some feeder wires. I thought FR clothing was only required when there is a potential for an arc flash burn. I don't see the potential for an arc flash, when preforming an insulation test since it is all voltage… Show more
I often see 'ball and socket type swivel covers for 4sq boxes' installed and supporting a variety of enclosures with long conduits or cords between. (I'm referring to usage other than lighting.) The exception to 314.23(F) says one rigid pipe can support a box with a threaded hub. But, the main body of 314.23(F) speaks of support within 18in of the… Show more
Stating a fact should never be wrong. Those covers are typically sold as swivel fixture hanger covers and listed only for the support of fixtures. The NEC changed from the term lighting fixture to luminaire quite a while ago. The manufacturing and listing agencies still use the term fixture. Also, do not confuse support with a securement.…
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If there is a complex of buildings not attached to each other, does each building need a fire alarm panel. Will it be sufficient to have just one control panel for 3-4 buildings. Will each building be required to be alarmed separately in case of fire.
Hi Gurdeep: Some jurisdictions may require a separate FACP in each building if each one has a separate building address. However, for code compliance; While installing a single fire alarm system for a multiple building facility offers certain challenges, with careful planning and execution, you will not have a problem complying with the…
NFPA codes and standards are designed to ensure the safety of products, activities or processes. When it comes to lightning protection systems (LPS), the difference between “safe and effective” and “unsafe and ineffective” lightning protection is ultimately related to which guidelines are implemented. Over the years, the Lightning Protection… Show more
I have a contractor that installed a 13R system in an !-4 Daycare and he used the small room rule in several room. I can not find any reference to the small room rule in 13R, just 13.
Image via 13newsnow.com Three people died and six were injured in a fire at a senior housing complex in Chesapeake, Virginia on Saturday, July 15th. The cause of the fire is reported to be a lightning strike somewhere in the vicinity of the roof of the three-story building. According to media reports, the building, which was constructed in the… Show more
A powerful statement, Greg. It is horrible to see these tragedies happen, but worse when we feel we can only mourn the losses and wring our hands. Thank you for the reminder that all of us have to be involved in improving safety, including participating in things like standards development. Making our voices heard can bring about real change.
Does VoIP technology meet the standard of NFPA 72 under MFVN? Specifically does VoIP meet the required unchanged format and does all on site equipment (modems, routers, etc.) require 24 hours of secondary power as required for the fire alarm system itself?
This is correct however when it comes to the AHJ not having a battery back up and trying to back up from a non supervised system is not a well received notion. At least where I am. Most of the time I only do IP when the customer has their own intranet and receiving station on site which is something like a university or large corporate campus. …
Does the 2 times a year annual inspection requirement for commercial kitchen fire suppression apply to non-commercial applications. A church, for example.
Over 5 years ago I became responsible for my church's buildings. That included insuring that our building's fire suppression equipment was in compliance with code. The fire inspector in Pickens, SC, briefed me on the inspection requirements. Our church building used to be a restaurant. It's kitchen was equipped with a halon type hooded… Show more
Is it a safe or an unsafe practice to use a fire alarm pull station to help evacuate a building where there has been a report of a natural or other flammable vapors? Are these type of electrical devices safe to activate in an area where a leakage of natural gas has been determined?
This is a common sense question. If the building has hazardous material then a different set of rules apply for that building and different equipment would be employed. But in typical occupancy type buildings like dorms, office buildings and the like then standard codes and equipment would be used. The possibility of a catastrophic explosion…
I need to clarify description. Openings have a minimum lintel depth of 8" from ceiling and the total width of the openings in each wall not to exceed 8'. I understand this to consider a 12" deep x 12" thick lintel over a 12' opening will combine two rooms into one compartment because even though it exceeds the minimum lintel depth, it is over… Show more
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NFPA works daily with a committed group of professionals who are responsible for maintaining fire and life safety in their facilities worldwide. Often those facilities are located in domestic and global jurisdictions with varying levels of safety enforcement capabilities. Many of you have developed your own programs to address this challenge in… Show more