Old Electrical Books Commented on: 1 week 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: 3 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: 3 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: 6 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...

Refrigerator Breaker Question Commented on: 8 weeks ago (October 10, 2016)

If the GFCI is a receptacle located behind the refrigerator, then it does not comply with Sec. 210.8. The last sentence of the first paragraph requires the GFCI to be readily accessible. GFCI...

Arc Flash Residue Cleanup Commented on: 12 weeks ago (September 10, 2016)

You really need to ask this question of the fire pump controller manufacturer. They are the only one who can truly answer your question from the standpoint of your liability.

Besides, if...

380V Motors Working on 440V Power Supply Commented on: 13 weeks ago (August 31, 2016)

A 380V motor being operated on a 440V supply is operating 15% above it's nameplate rating [(440-380)/380 = 0.1579]. This is outside the normal operating range of the motor. Motor parameters would...

Electrical Panel Locations Commented on: 13 weeks ago (August 31, 2016)

It depends. What branch circuits are served from the panelboard?

Circuits for outlets outside the X-ray room? Perhaps another location for the panelboard would be wise.

Circuits for...

Arc Flash Requirements Commented on: 13 weeks ago (August 31, 2016)

To obtain an interpretation of NFPA 70E requirements for operating older equipment you will need to review the material in 70E and perform a hazard assessment.

Notice that I did not say arc...

Healthcare Facilities Commented on: 13 weeks ago (August 31, 2016)

The White Book is only a Recommended Practice, albeit a good start toward adhering to the best practices. I believe what the OP is asking for is NFPA 99, Healthcare Facilities Code. Codes are...

Electrical Testing Feed
Join the Discussion on EC&M Talk

EC&M Webinars
Nov 9, 2016
Webinar

Technology Enabled Data Center Life Cycle Services

This webinar will discuss the benefits of cloud connected data center monitoring, different levels of monitoring and the potential effects on availability and efficiency....More
Nov 2, 2016
Webinar

There is More to a Data Center than White Space; A Holistic Approach to Facility Monitoring and Control

This webinar will discuss the benefits of cloud connected data center monitoring, different levels of monitoring and the potential effects on availability and efficiency....More
EC&M Learning Center

Connect With Us

Sponsored Introduction Continue on to (or wait seconds) ×