Code Basics

Emergency Systems and the NEC

Thu, 16 May 2013 00:51:00 +0000

By Mike Holt, NEC Consultant

Emergency systems are lifelines for people, and Art. 700 is based on keeping those lifelines from breaking

NEC Rules for Fire Pumps

Tue, 16 Apr 2013 20:30:00 +0000

By Mike Holt, NEC Consultant

Understanding the circuit protection requirements of Art. 695 and why they’re different from other parts of the NEC

NEC Rules for Electric Signs and Outline Lighting

Mon, 18 Mar 2013 18:38:00 +0000

By Mike Holt, NEC Consultant

Understanding the rules for the installation of conductors, equipment, and field wiring as outlined in Art. 600

Motors and the NEC

Wed, 13 Feb 2013 19:21:00 +0000

By Mike Holt, NEC Consultant

Applying Article 430’s allowances for overcurrent protection

NEC Rules for Installing Lighting on Circuits Greater than 30V

Wed, 16 Jan 2013 19:32:00 +0000

By Mike Holt, NEC Consultant

Article 410 provides the requirements for installing luminaires, lampholders, lamps, and decorative lighting products on larger voltage systems

NEC Rules on Overcurrent Protection for Equipment and Conductors

Tue, 18 Dec 2012 17:45:00 +0000

By Mike Holt, NEC Consultant

Overcurrent exists when current exceeds the rating of equipment or the ampacity of a conductor. This can be due to an overload, short circuit, or ground fault [Art. 100]. Overcurrent devices protect conductors and equipment from overcurrent.

NEC Rules on Outside Branch Circuits and Feeders

Fri, 09 Nov 2012 16:42:00 +0000

By Mike Holt, NEC Consultant

Outdoor conductors running to buildings aren't necessarily service conductors. They may be feeders or branch circuit conductors originating in another building. They may provide power for area lighting, outdoor equipment, or a separate structure.

NEC Rules on Alternative Energy Systems — Part 2

Mon, 22 Oct 2012 15:01:00 +0000

By Mike Holt, NEC Consultant

Unlike solar and wind systems, fuel cells run on fossil fuel, even though they reduce fossil fuel usage in total. However, that is changing — as biomass-based fuel cells are being developed.

NEC Rules on Alternative Energy Systems — Part 1

Wed, 19 Sep 2012 17:03:00 +0000

Solar and wind are two alternative energy technologies that are increasingly providing work for electrical contractors.

NEC Rules on Swimming Pools and Spas

Fri, 17 Aug 2012 17:00:00 +0000

By Mike Holt, NEC Consultant

Understanding the 2011 revisions to Art. 680. The installation requirements of Art. 680 help keep people safe when they’re using swimming pools, hot tubs, spas, fountains, or hydromassage bathtubs.