Mar 23, 2017
When reading a book, how often do we skip past the introduction and start with the chapters that interest us? That happens to those of us that use the NEC as well, but understanding the introduction to the code in Article 90 is key to properly applying the technical requirements...
Jan 24, 2017
The conditions of use must be considered when determining the minimum size of a feeder conductor. A continuous load, such as the lighting load in a store building, generates heat in the feeder conductor that must be compensated for. Ambient temperatures above 86oF or more than...
Dec 06, 2016
The general rule in 215.3 is that a feeder overcurrent device shall have a rating not less than the noncontinuous load plus 125% of any continuous loads supplied by the feeder. Unless permitted for specific applications, such as motor circuits, the rating of the feeder overcurrent device is selected as...
Oct 20, 2016
The 16 Hour Renewal Package for Utah is online for all Utah licensed electricians to take for their Utah continuing education requirement. Utah electricians are required to have all 16 hours of electrical continuing education reported to the Utah Division of Occupational & Professional Licensing (DOPL) by November 30, 2016. Utah...
Sep 26, 2016
A multiple-outlet branch circuit is a branch circuit that supplies two or more outlets. With the exception of the required small appliance, laundry, and bathroom receptacle circuits in dwelling units, those outlets may be a combination of lighting outlets for luminaires, receptacle outlets for cord and plug connected utilization equipment...
Sep 08, 2016
Oregon General Supervising Electricians (S) and Limited Supervising Electricians (PS) have a 24-hour Oregon electrical continuing education requirement that has to be satisfied by Saturday, October 1st, 2016. The state of Oregon Building Codes Division requires the 24 hours of Oregon electrical continuing education hours to cover 12 hours of...
Jul 18, 2016
If you are preparing to take an electrical licensing exam, you will need to know how to calculate the feeder or service load for a single family dwelling. Refer to section 220.82(A)&(B) in the 2014 National Electrical Code (NEC). Here is a sample problem. Use the optional calculation to find...
Jun 21, 2016
The requirements for securing and supporting are similar in intent, but there are differences. Securing is done by installing a mechanical means of attachment to the cable and attaching it to a stationary structural member so the cable does not move. This will prevent the cable or conduit from becoming loose and pulling away from a box or fitting. Support requires a mechanical means to prevent the cable from sagging or drooping which may cause damage to the cable and create a hazard. A cable may remain loose while its support is maintained.
