Log in to follow, share, and participate in this community. Hi, I am new to the USA (from Australia) and I want to know if there is a NFPA standard that relates to 12V DC electrical wiring for Fire Apparatus and any associated equipment fitted to a Fire Apparatus. I pu... A collage campus emergency (NEC 700) & Legally Required Standby Systems (NEC 701) and optional systems. To do everything on campus. They are asking for is to install one 700 KW natural gas generator tha... OK So this is probably gonna sound a bit random and possibly bizarre but say if I imported a domestic 220 outlet from Europe and wanted to wire it to a double pole breaker for only one part of a house, would it b... Hello, I'm looking to install ethernet in my ~45yo house. Right now I'm looking to use unshielded Cat6a cables. I've read that 16-inch spacing between the ethernet cabling and my house's electrical wiring is b... NEC 220.87 allows for the existing load to be used for load calculations as follows: The maximum demand data is available for a 1-year period. The maximum demand at 125% plus the new load does not exceed the ampacit... What is the standard back time of Batteries in non alarm condition and in alarm condition? I have a question about format in 70E Can someone please tell me the format for measurements? (how it is written) Is it metric (imperial) format like in NEC? Or is it imperial (metric) format like in all oth... In the rv section 1192 is there a code that prohibits 120v wiring in ac ducts? I have a overheads ac units that is full of electrical an tv wiring. It fills the duct about 70% and restricts the air flow. Do the electrical components of a Tunnel Boring Machine for a tunnel construction in Virginia have to be UL approved or listed?. The TBM will be mining in gassy conditions (C1D2) I am trying to interpret correctly the logic of the SCCR method suggested in NEC 409.110 (4).b which is the UL508A SCCR Calculation. According to this method, all the components in the feeder circuit would defin... Can 480V power wiring and fiber optic cables be installed in the same conduit per 2020 NEC? What are the requirements and/or restrictions? NFPA 99 (2015 edition) 188.8.131.52.6.2 (D) notes a receptacle is not required in bathrooms If a receptacle is installed would a hospital grade be required? Part A required hospital grade at patient bed locations. Is a rec... For NEC, Is a nursing home considered a health care occupancy where persons are not capable of self preservation? Yes? -or- No? From 517: Nursing Home. A building or portion of ... A process room contains a piece of machinery rated Class I Zone 1 internally, Zone 2 externally. An auxiliary piece of equipment rated Class II Zone 22 is being added. What are the requirements for the Zone 22 item; d... A customer is installing a permanent Above Ground pool. He is asking to install on the ground perimeter LED strip "tape" lighting. ¿Is it allowable to do it, if using a Listed Class 2 LED driver? ... Is it ok to put an electric heater (radiator) and its electric outlet in the bathroom, if yes what are the minimum distances from the shower and wash sink that are required? Would the NEC 2017 110.26 C 3 require 2 doors for an existing electrical room with a 1600 amp service if the only new work is to add a breaker feeding a new distribution board in a new Electrical room? Currently... Is it permitted by NEC to use a conduit reducer in an underground installation of PVC? We would like to reduce from 2 1/2" to 2" PVC for an underground service conduit system. Thanks to NFPA and its readers they surely understand the true dimension of ... I am using Aspirating Smoke Detectors in a factory. Do we need Third Party Certification for Pipes of Aspirating Smoke Detectors?