Log in to follow, share, and participate in this community. I am using Aspirating Smoke Detectors in a factory. Do we need Third Party Certification for Pipes of Aspirating Smoke Detectors? I have water fountain decorative NEC 2014 Section 680 Part V and for lights using pool transformer isolated primary 120V to secondary 12VAC RMS. Lights are no niche 12 VAC RMS. Following questions: a. T... Good afternoon, I would like to know if there exists a code, law, or rule that indicates it is mandatory to do electrical safety inspections periodically, at existing buildings and homes in order to avoid home f... Great resource here: https://docspace.io You can mobilize your NFPA 72 eform so the you can fill out the NFPA 72 form on your mobile phone or tablet. It even adds additional functionality to it. For exa... I have permanent decorative fountain in ground for aesthetic purpose that does not have water common to pool. I see that per Part V NEC 2014 Section 680.50, Part II which include equipotential bonding only applies if ... main lug subpanel I was working on a 200 amp panel and I came across a sub-panel 8 space 8 circuit maxed out that has an overcurrent protection 2 pole 30 amp with a 10/3wire the 200 amp is maxed ou... The wording in the 2017 NEC regarding physically impaired and totally flat counter tops at islands and peninsulas has been removed. We are designing to use a circuit breaker with only magnetic unit trip protection for a single fire pump (without a jockey pump).Should the FRAME of the circuit breaker meet the rated current OR... In low voltage control panels ( typically 120 VAC PLC panels ) how can the code be correctly applied for fusing from a control transformer to loads such as electronic modules. One main fuse from the line s... Hi, I'm looking for a certified company who could make me a hazard evaluation for a silo area, and manufacturing area too for the cornmeal factory. Could you recommend me one, please? At a job location we recently had a conversation on providing viewing / inspection windows on our transformers at a facility, the client has a great PM plan is place for all the electrical equipment. Test , clea... Hello, My organization is troubled by a recent question raised about the Rapid Shutdown Requirements of a Ground mount system which has AC conductors entering a building for interconnection. In NH the guidance... When installing a 1300kva Delta 13.8kv primary, 480vac Delta or Wye secondary. XFMR will have <6% impermanence. Is it necessary to install a fused disconnect on the secondary of the XFMR with OCPD on th... I wanted to clarify what the designer is expected to do regarding calculations to show compliance with 310.15 (B) (2) Ambient Temperature Adjustment Factors, especially during a fire condition. This is al... The NEC does not have an article like 625 (electric vehicle charging system) that applies to off-road vehicles, such as electric fork-lifts and golf carts, etc. 625.2 Definitions for electric vehicle, is defined for a... 312.2 says in wet or damp locations to cabinet or cutout boxes shall be mounted so there is at least 1/4 inch airspace between the inclosure and the wall or supporting surface. My question is how to achieve this spaci... With regards to GFCI requirements NEC 210.8. Requirements for water closets are not addressed specifically. (definition: a water closet is a small enclosed area with a door that contains only a toilet. No sinks, tubs,... in our project, increased Safety (exe) enclosure are installed in class I, zone 2 . As per NPPA 70, Inarticle 505.16 (C):class II, Zone 2 locations, seals shall be located in accordance with 505.16(C)(1) and (C)... Hello, We are a California Electrical Contractor and we installed a new 1200 amp switch gear section for a retail center. This was a upgrade of a existing 1000 amp switch gear section. We a... What type of breakers are available today that will allow "Double Tapping" in a residential breaker panel?