The term supply-side bonding jumper first appeared in the 2011 National Electrical Code as a result of a CMP-5 Task Group regarding the proposed revisions to Section 250.30 for grounding separately derived systems.
(No Ratings Yet)In this instance, the panelboard is serving the function of a pull box for these pass-through conductors.
(No Ratings Yet)Question Where conductors from both dc and ac photovoltaic systems utilize a common junction box or other enclosure, are there any special identification requirements for these conductors? Also, where photovoltaic circuits are run inside a building (whether in conduit or not), can these circuits be run embedded within insulation, and if so, is there any [...]
(No Ratings Yet)A single or duplex receptacle is acceptable in this situation. Section 210.52 addresses the requirements for dwelling unit receptacle outlets.
(No Ratings Yet)Section 250.64(B) states where exposed and on a surface, a grounding electrode conductor should be protected. If I sleeve an 8 AWG GEC in rigid nonmetallic conduct from the service panel to the crawl, do I have to protect the GEC in the crawl, or is it ok to run the GEC on the bottom [...]
(No Ratings Yet)I would like some advice and general guidance regarding the use of breakers that are not listed on the panelboard data sheet. Some of these panels have not been made in twenty years and the company is out of business. I generally recommend finding surplus breakers on the internet. Most electricians try to get by [...]
(1 votes, average: 5.00 out of 5)The question I have is spread over several sections of the NEC (or so I think). I am inspecting a surgery center that has a 14-in-12 or, possibly, 16-in-12 pitch roof. The engineer wants to place an exhaust fan on this roof. I am finding nothing specifically in the NEC that would preclude the placement [...]
(1 votes, average: 5.00 out of 5)Article 250.92(A)(2) of NEC-2005 requires bonding between service enclosures. I have a meter base can with the grounding electrode conductor connected to the neutral lug going to the grounding electrode. I have a single-phase three-wire service conductor system feeding from the meter can to the service-disconnect panel. The meter base can and the service-disconnect panel [...]
(No Ratings Yet)For a 200-amp load center used for feeding charging equipment that is approximately 400 ft from main switchboard, what size of bonding wire is required? — T. C.
(No Ratings Yet)When using a 90°C single conductor in an ambient temperature of 81°C – 89°C, what is the correction factor for this application? It is presumed once the temperature reaches 90°C the conductor has met or exceeded its rating. Is there ampacity present in this conductor at 85°C, however minimal it may be? There is no [...]
(No Ratings Yet)
IAEI, as the keystone of the electrical industry, is a membership driven, non-profit association promoting electrical safety throughout the industry by providing premier education, certification of inspectors, advocacy, partnerships and expert leadership in Electrical Codes and Standards development.
Bad Behavior has blocked 2656 access attempts in the last 7 days.