Sep 26, 2014
If the point of interconnection will be made at a feeder, other than the opposite end of the primary overcurrent protective device (OCPD), then there are two options and both apply only to the portion of feeder on the load side of the inverter output connection.
Aug 22, 2014
Let’s start out with the first basic requirement in 705.12(D)(2): 125% of the inverter output circuit current must be used for the ampacity calculations for most of the interconnection methods used. Whether interconnecting the Inverter Output Circuit through a breaker at the service panel or directly to a feeder, it is important to first know the inverter output circuit current.
Jul 15, 2014
In the Summer Newsletter article, we discussed marking our service equipment with the maximum Available Fault Current (AFC) as well as the date the fault current calculation was performed to comply with NEC 110.24(A). We selected circuit breakers with an AIC rating equal to or greater than the AFC. So...
Oct 15, 2013
Register for our 2014 NEC Changes free webinar on November 12, 2013. Also, stay tuned to The Junction Box Blog for more information on the 2014 NEC changes. AFCI protection is one of the most talked about additions to the National Electrical Code over the years. Watch this quick video on...
Oct 10, 2013
One theme in the new edition of the Code is new technologies and requirements for their safe installation and modification. Today we are going to start with four new articles that were added in the 2014 edition of the National Electrical Code to accommodate these emerging technologies.
Jun 12, 2013
Today John Hauck and David Burtt discuss the identification of equipment grounding conductors according to the 2011 National Electrical Code. This is part 3 of a 3 part series on identifying conductors. How are equipment grounding conductors identified?250.119. Equipment grounding conductors can be bare, covered or insulated. If insulated...
May 23, 2013
Today John Hauck and David Burtt discuss the identification of grounded conductors according to the 2011 National Electrical Code. This is part 2 of a 3 part series on identifying conductors. How are grounded conductors required to be identified?200.6(A). In sizes No. 6 AWG and smaller, an insulated grounded...
May 16, 2013
Today John Hauck and David Burtt discuss the identification of ungrounded conductors according to the 2011 National Electrical Code. This is part 1 of a 3 part series on identifying conductors. Does the National Electrical Code have a required color code? No. The National Electrical Code does not have a...
