For an existing conference room where the Architect required adding an outlet, the plan check person has required outlets as per this article, which requires quantity as in a residence. In addition, it requires ... Since the 2014 edition, 240.21(B)(1)(1)(b) has allowed a 10 ft feeder tap to terminate on "equipment containing an overcurrent device" as an alternative to terminating directly on an OCPD. I would like to conn... When working 120Volt Circuits live Receptacles, switches what PPE is required? I have a question. If there is a crew going out to do some electrical maintenance. But only one member of the crew is a qualified electrician. do the other people assisting him need to have CPR and other ... Hi, I am working on a project in which I will be using a VFD to drive an AC motor. For the motor power cable from the VFD to the motor, I am planning to use a cable with a braided shield that is specifica... There is a product that we want to install in a ceiling in a Healthcare facility and understand the requirements of firestopping for cables but what is the permissible gap for an opening to limit the spread of sm... I have a question on the 2020 NEC code – definition of a term. In Article 100 (70-35) there is a definition for “Dwelling Unit”. It states: A single unit ….. My question is ... Hi, I need fire fighting pump requirements according to NFPA please help me about it. Thanks Hi, How can I safely connect a portable generator to supply power to a house? The house has a standby generator which no longer works, and the stator and rotor windings are completely shorted. I lease the house and... Good Afternoon, I have a question hopefully I can get some help on. I was troubleshooting a recepticle in co-op apartment that is not working. I went to the circuit breaker panel and when I... Has anyone heard of any issues of AFCI breaker unavailability due to factories that shut down? I have a office that needs to have power for a refrigerator.. Put I have only 2 options 1. run a new line to the appliance 2. run a extension cord with a gfci.. I know i can do the first one. But... Hello everyone, I am working on an emergency lighting scheme for a hospital and the client wants this to be done as per NFPA 101. I am just wondering if there's a guide that clearly shows the emergency l... Pre-action vs dry pipe sprinkler systems, high and low air pressure monitoring. I am designing a new pre-action system that is arranged for double interlock with smoke detection for activation of solenoid. I k... 184.108.40.206.1 Extraction and post oil processing operations including dispensing of flammable liquids between containers, shall be performed in one of the following locations: A chemical fume hood in accordance with Ch... The question is in Article 480.10 (E) Egress, "rooms designated as battery rooms" do we have a definition of a battery room ? I didn't find one in Art- 480 or in Art -100 . The requirement to have doors that swing in ... Lightning protection systems NFPA 780 and NFPA 70 article 250.60 and 250.106 I have a design with has multiple towers on these towers the manufacturer has lighting strike protection, the tower is aluminum they... Is anyone aware of a NFPA code/standard or other citable industry authority that generally discusses that code compliance for an existing installation is determined by the code in effect at the time of construction?... I have existing monopole tower for antenna which is grounded and bonded. Now the structural engineer is going to place long shaft metal plate metallic on each side of the monopole tower by drilling holes in to... Someone please, inform me. What is a "poke through?" Does this have an approved degree of detail? Is this meaning clear? Am I being unfair by not signing off on this?