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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...
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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?
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Call for Nominations for NAED Annual Awards
The National Association of Electrical Distributors has opened nominations for its 2009 awards.
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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...
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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?
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Three-way outlet; rotary dimmer; wireless smoke alarm; finish for pressure-treated lumber; more
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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?
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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.
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EMT costs more up front, but it's less likely to get damaged and makes future upgrades a lot easier.
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Manufacturers Join NEMA Ballast Program
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