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  • Q&A: Sizing Electrical Boxes

    What are the guidelines for determining box size, and how can you prevent overcrowding?

     
  • Q&A: Outlet on Boxed column

    If you box in a Lally column in a finished basement, does code require that you install an outlet there?

     
  • Standard Writing Groups Sue In Copyright Claim

    Federal courts have ruled that building codes, once adopted into law, can’t be copyrighted. A new lawsuit will test whether that principle also allows free re-publishing of ASTM standards and similar industry-created consensus-based rules.

     
  • Simpler Solar Panel Assemblies

    Cost and complexity are the two main reasons you don't see a photovoltaic array on every rooftop in America (except in Seattle).

     
  • Duct Chases and Electrical Wiring

    Is it okay to fish electrical wiring through the wood-framed chases built around hvac ducts and chimneys?

     
  • Pancake Boxes and Ceiling Fixtures

    Q: To retrofit light fixtures for old plaster ceilings that will be covered with new drywall, I plan to screw 1/2-inch-deep metal pancake boxes into the lathe of the existing ceilings and hang the new drywall around the boxes. But my electrician wants to cut into the ceiling and install deeper...

     
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    Residential Fire Sprinklers

    Your state may be the next to mandate these systems, so it’s a good idea to understand how they work .

     
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    Are LEDs Okay in Closets?

    A client wants to install LED light fixtures in his closets, but my local code inspector is hesitant to approve them. It seems to me that an LED fixture poses no more of a fire risk than a fluorescent light. What does the code say?

     
  • 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?

     
  • 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

     
  • To Bond or Not to Bond?

    Q. As a building inspector, I understand Article 250 of the most recent National Electrical Code (2005 NEC) to mean that any potential grounding electrodes available to each electrical service must be bonded together into that service's grounding electrod

     
  • Letters From the Editor

    From the editor; permeance of foam in unvented attics; electrical red flag; immigration

     
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    In the News

    Expanded AFCI requirements; trenching turns deadly in Southern California; nicad battery recall; more

     
  • Does a Bathroom Fan/Light/Heater Unit Require a Separate Circuit?

    Q: Can a fan/light/heater unit be placed on the same circuit as the bathroom's required 20-amp receptacles, or does it require its own separate circuit?

     
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    Replacing an Electrical Service

    Upgrading service equipment increases safety and load capacity while bringing the house up to code.

     
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    Moving an Electrical Box

    Q: On a current kitchen remodel, my electrician placed one of the electrical boxes for the countertop outlets too low. I need to raise it about an inch to clear a stone backsplash. There's enough stripped Type NM-B cable left in the box to do this without splicing, but because the plastic sheathing...

     
  • Bringing Two-Wire Circuits Up to Code

    Q. What's the quickest and easiest way to bring a two-wire circuit up to code?

     
  • Limits on Outlets

    Q. How many receptacles can I put on a 15-amp and a 20-amp circuit?

     
  • 1004ne-05

    In the News

    Lessons from Hurricane Charley; stray voltage zaps homeowners; building code comes to Pennsylvania; NAFTA panel slams U.S. on tariffs

     
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    In the News

    Nail gun accidents, California picks NFPA code, Minnesota stucco warning, mega-home tally, Business Tune-Up

     
 
 
 
 
JLC Field Guide to Decking