• Newsletter Subscriptions
  • Magazine Subscription
  • Home >
  • Back Issues >
  • Electrical Construction & Maintenance >
  • April 2021

    • April 2021

    Electrical Construction & Maintenance: Volume 120, Issue 4
    Facebook
    Facebook Sarpy County Data Center Expansion

    Construction Market Comeback?

    April 19, 2021
    With numerous large projects hitting the market and some bullish leading indicators, the construction market may be snapping out of its slump earlier than expected.
    Practically Speaking Ecm Magazine April 2021

    Practically Speaking: Stuck in the Middle

    April 8, 2021
    What side of the fence are you on regarding means of support requirements for EMT raceways?
    Photo1

    Insulation Resistance Testing Simplified

    April 8, 2021
    An inside look at the reasons for testing, the types of testing available, and the proper test methods for each application
    Fig. 1. Equipment containing overcurrent devices or switching devices 1,200A or more and over 6 ft wide requires an entrance for the required working space not less than 24 in. wide and 6½ ft high at each end of the working space.

    Stumped by the Code? NEC Rules for Access to and Egress From Working Space of Large Equipment

    April 8, 2021
    What is the Code rule for access to and egress from working space of large equipment that contains overcurrent devices?
    © Antoine2k | Dreamstime.com
    Safety Corner Hazardous Communications Promo Image Dreamstime Xl 75488015

    Let’s Talk About Hazardous Communication

    April 7, 2021
    Use your company’s HazCom program to stay safe.

    More content from April 2021

    Illustrated Catastrophe 1 A Adjusted

    Illustrated Catastrophes: Creative Compressor Repairs

    April 7, 2021
    Do you know how these installations violate the NEC?
    Fig. 1 Where a building or structure is supplied with multiple services, the same electrode must be used to ground enclosures and equipment in or on that building.

    The Differences Between Grounding and Bonding ― Part 4 of 12

    April 7, 2021
    Do you know the requirements for grounding electrodes and grounding electrode conductors?
    April Wwh

    What’s Wrong Here? Hint: You Have No Standing.

    April 7, 2021
    Check out the latest questionable installations that Russ encountered.
    Photo 1. It is possible to drag an electrical arc from Phase B to Phase C (center to right terminals) when measuring voltage. Notice that the worker is pulling the black test lead toward him or herself before placing it on Phase C. Simply sliding the black test lead from the center to the right-hand terminal could establish a phase-to-phase arcing fault through the airspace between the terminals.

    Use It, or Lose It

    April 7, 2021
    Five practical tips to keep you at the top of the electrical trade
    Photo courtesty of Cooper Lighting
    Photo1

    Battling a Virus with GUV Lighting

    April 7, 2021
    Ultraviolet radiation can be a powerful weapon in fighting COVID-19.
    Photo 1. Should you try to work around this situation, or wait until the area is clear?

    Invisible Decisions

    April 7, 2021
    What happens in the field on an electrical job site is often not visible to management.
    Refurbished equipment often is available faster than brand-new gear. One contractor tells customers with tight schedules: “Here’s an option. We can get this completed in the five weeks you want or it’s going to take us 12 just to get the materials.” This inventory includes General Electric Powerbreak I & IIs.

    New Life for Old Equipment

    April 7, 2021
    Politics and the pandemic are among the factors spurring the market for reconditioned electrical equipment.
    Photo courtesy of Arizona State University
    Microgrid basics, including elements of safety, have been offered through The Laboratory for Energy and Power Solutions at Arizona State University.

    Energy Storage and Microgrid Training for Electricians Takes Off

    March 24, 2021
    ESAMTAC program, designed to train, test, and certify installers, gets a big boost in California, where more microgrid projects are ramping up.