Code Q&A
Jun 20, 2006, By Mike Holt
Q. When determining the placement for receptacles in a dwelling, is the wall space behind a door required to be considered?...
Code Violations Illustrated
Jun 12, 2006,
Code Q&A
Jun 12, 2006, By Mike Holt
Q. Am I required to install the secondary circuit conductors of a low-voltage lighting system (less than 30V) in a raceway or cable like power conductors?...
Code Quiz
Jun 12, 2006, By Steven Owen
When installing wiring from a fire pump controller to a fire pump motor, which of the following wiring methods is not permitted?...
Article 700: Emergency Systems
Jun 1, 2006, By Mike Holt, NEC Consultant
Essentially, emergency systems are lifelines for people, and Art. 700 is all about keeping those lifelines from breaking. The Article's main goal is to...
Illustrated Catastrophes
Jun 1, 2006, By Joe Tedesco, NEC Columnist
As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...
Code Quiz
May 24, 2006, By Steven Owen
An existing corporate data center is concerned about possible loss of power due to the fact that it is supplied by only one service. The existing feed consists of a 1600A, 208Y/120V, 3-phase, four-wire service. Data center management personnel propose to add an additional service....
Code Q&A
May 24, 2006, By Mike Holt
Q. Does the NEC specifically state that a generator must be grounded to the earth if its wiring is connected to the premises via a transfer switch that does not open the neutral?...
Code Quiz
May 11, 2006, By Steven Owen
According to 110.16, certain information is required on the label when marking switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers....
Code Q&A
May 11, 2006, By Mike Holt
Q. Can the service disconnect be located within 5 feet of a pool or hot tub?...
Power to the Pump
May 1, 2006, By Mike Holt, NEC Consultant
One of the principal NEC requirements for circuit protection is that you shut down the equipment rather than let supply conductors melt from overload....
Stumped by the Code?
May 1, 2006, By Mike Holt, NEC Consultant
Q. I have six 18-foot metal poles to install in a parking area. Is a ground rod required at each pole? If not, then why do some people insist that they are required?...
NEC and IECC: Friends or Foes in the Lighting Arena?
May 1, 2006, By Steven Owen, National Code Seminars
Is there a positive relationship between the National Electrical Code (NEC) and the International Energy Conservation Code (IECC) in the area of lighting,...
Illustrated Catastrophes
May 1, 2006, By Joe Tedesco, NEC Columnist
As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...
Code Quiz
Apr 24, 2006, By Steven Owen
Excluding exceptions, what is the requirement for cabling work space, which includes a requirement for a clear work space not less than...
Code Q&A
Apr 24, 2006, By Mike Holt
Q. Can an air duct be installed directly above an electrical panel?...
Code Quiz
Apr 11, 2006, By Steven Owen
What is the minimum number of 20A branch circuits required for a guest suite of a hotel or motel, which consists of the following...
Code Q&A
Apr 11, 2006, By Mike Holt
Q. Can recessed or surface-mounted lighting fixtures be supported by securing them to the suspended ceiling grid, or must they be independently supported from the building structure?...
Exploring Requirements for Information Technology Equipment
Apr 1, 2006, By Mike Holt, NEC Consultant
If you've ever seen a shutoff switch located just outside an information technology (IT) room, you may have wondered who in their right mind would install...
Illustrated Catastrophes
Apr 1, 2006, By Joe Tedesco, NEC Columnist
As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...
