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More stories about Electrical

  • Are You Using State-of-the-Art Lighting Controls?

    Until the mid-1970s, buildings usually were designed without any type of lighting control. In fact, many also were designed without heating systems, because of the enormous heat produced by 24-hour operation of indoor lighting systems. In hot climates, you can imagine how this added to the amount...

  • Can Dimmer Switches Save Energy?

    Q: We know that compact fluorescents deliver energy savings, but how about dimmer switches? The assumption is that homeowners will use them to turn down lights to save money — but do they actually save energy?

  • Call for Nominations for NAED Annual Awards

    The National Association of Electrical Distributors has opened nominations for its 2009 awards.

  • Quick Fix for a Noisy Circulation Fan

    Q. My client's metal fireplace is supplied by a makeup air system with a built-in circulation fan. This fan - which plugs into an accessible outlet - is triggered by a heat sensor in the fireplace. While effective, it's also very loud. To reduce the noise, I'd like to replace the fan's on/off...

  • Burying Electrical Wiring In Attic Insulation

    Q: I know that knob-and-tube wiring can't be covered with insulation, but what about BX cable and joist-mounted junction boxes? Are there any restrictions on blowing cellulose insulation into an attic and burying the cable and junction boxes?

  • Products

    Three-way outlet; rotary dimmer; wireless smoke alarm; finish for pressure-treated lumber; more

  • Upgrading to Three-Prong Outlets

    Q. In an older house wired with BX cable, can the original two-prong outlets be upgraded to three-prong grounded outlets, provided they're properly bonded to the original metallic boxes?

  • Three States Adopt 2008 NEC

    The new code, to be adopted by Colo., Ken., and Wyo., adds requirements for the inclusion of arc-fault circuit interrupters and tamper-resistant outlets. See nema.org for more information on the new code.

  • Running Wire in Conduit

    EMT costs more up front, but it's less likely to get damaged and makes future upgrades a lot easier.

  • Subpanel Bonding

    Q: Is it possible to properly bond an electrical subpanel without running four-wire SER cable to it from the service-entrance panel? Some electricians have told me that under certain circumstances the subpanel can have its own ground wire and rod, while o