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... I am an electrician at a VA health care facility. I was recently tasked with doing a Relocatable Power Tap (RPT) audit of all of our patient care rooms. I understand that the area within 6 feet of where the patient re... As it pertains to NFPA 70E's requirement of placing a device, piece of equipment etc in a "Electrically Safe State", you turn off a breaker to a light switch or outlet. The next step is to verify via a meter that the ... I have electrical service conductors going into trough. From trough inside service cables their is connection tap three separate service disco enclosures with fuses. I have one grounding electrode ... Healthcare facility Dear Sir, We are working on the fire protection system for a Ship-to-Ship (STS) transfer operation is the cargo transfer between two ships that are moored alongside each other. Types of cargo transferred via ... The wording in the 2017 NEC regarding physically impaired and totally flat counter tops at islands and peninsulas has been removed. I have small storage room which has 75kVA transformer 480V to 208/120V three phase with tap changer primary side. The transformer secondary feeds Panel A in the same room. The Panel A feeds receptacles,... NEC 334 Nonmetallic – sheathed cable (Romax) Type NM / NMC & NMS. What does the B stand for in NM- B cable? Aluminum or copper clad aluminum manufactures, are sending this information and it can not be fou... Watch the guys on the ladder https://www.youtube.com/watch?v=Fg36duyIsAs I am not sure this goes to fire protection system. I have dedicated utility service that feed service rated fire pump controller to fire pump. I need to know the circuit breaker internal in the fire pump c... I am just making sure I am reading this properly. Could use an outside opinion. In NFPA 79 220.127.116.11 Where color is used for identification, the color shall be used throughout the length of the conductor... 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... I need assistance from someone who specializes in electrical safety programs in a test lab environment where both technicians and engineers are working on and testing medium voltage equipment at an electrica... I have a light tower and emergency stop button mounted 50 ft from the system enclosure. The current for the light tower is 300mA at 24VDC. I want to use a 20 AWG multiple conductor cable in a raceway to co... There is a 24VDC LED light bar and a door switch in my enclosure which turns the light on/off depending if the door is open or closed respectively. My question is does the light need its own ... 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? Could you provide me with the code year, section, and language that first required a dedicated circuit for a microwave oven in a residential setting? My library of NFPA-70 does not go back that far. Thanks, R. Clem ... I am looking at a portable hand-held instrument for use in a Class I, Div. 2, Group B,C,D (Zone 1) and Class II, Div. 1, Groups F,G (Zone 21) area. The instrument I am looking at has the following listing. I am able t... Is it permissible to provide NEMA 5-15R or NEMA 5-20R outlets in lockers that can be locked by the user? If so or if not, can you cite the articles in NFPA 70 to support your statement?