112kVA Transformer to Two 200A Panels Commented on: 1 week ago (February 8, 2017)

All three of your suggestions are acceptable design options.

But I have to ask. Is there a reason for two separate panelboards with the same voltage and bus rating? If not, then I would...

Line Loss Pro - anybody heard of it? Commented on: 2 weeks ago (February 7, 2017)

Manufacturer's technical data states: "The device was tested and certified by Metlabs in October 2008, under UL 916 standards and guidelines for safety. Certification included CSA C22.2 testing...

GFCI for Wet Location Commented on: 6 weeks ago (January 10, 2017)

I'm with Mr. Doody on this. Site unseen, I suspect your electrical systems (i.e., receptacles, lighting, feeders, panelboards, low-voltage equipment) are not installed in raceways and enclosures...

Attic Lighting + Timer Switch Commented on: 6 weeks ago (January 10, 2017)

Ahh... let's define expensive and safe.

A lamp base with a pull chain is most likely your least expensive option for controlling the light. That assumes the light is installed at the point...

NEC Class 2 Power Source Commented on: 6 weeks ago (January 10, 2017)

I get the impression you are thinking of the issue backwards.

The NEC does not necessarily prescribe where a Class 2 Power Supply is required to be used. The NEC, in Art. 725, informs you...

Feeder Length Reconciliation Commented on: 9 weeks ago (December 16, 2016)

Centerfielder: If you are asking about ordering wire for a project, typically a quantity take-off is made from the drawings and then a percentage is added to account for deviations in measured...

Old Electrical Books Commented on: 13 weeks ago (November 22, 2016)

I echo Jim Doody's search. Those are three of the classics and I've been keeping an eye out for them going on twenty years.

Hazardous Location Class 1 Div 2 On A Building Commented on: 15 weeks ago (November 8, 2016)

You sound like you have a beginner's understanding of the situation. Because of the consequences if something goes wrong you need to be sure.

Read NFPA 70 (NEC) Articles 500 and 501. Then...

GFCI Commented on: 15 weeks ago (November 8, 2016)

JoeRob,

Where did you get the impression that GFCI protection in dwellings had been reduced or eliminated? The 2017 NEC added two more areas to the list of required areas. GFCIs protect...

Cat. 5e and MC Cable in Same Conduit? Commented on: 18 weeks ago (October 18, 2016)

Refer to NEC Article 725, Part III, particularly Sec. 725.136(I)(1). This permits Class 2 cabling to share the same raceway as Class 1 power circuits. The Class 2 circuit is separated from the...

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