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Wiring

  • Undercabinet Lighting Options

    Fluorescent strips are not the only choice for task lighting below wall cabinets. This overview explains the difference between halogen, xenon, and fluorescent lamps and sorts through the various fixtures available.

     
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    Trade Talk: More New Homes Getting Structured Wiring

    Wiring for the future comes to the present

     
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    Q&A: To Pigtail or Not to Pigtail?

    Q: I have always thought that the best way to wire a receptacle is to use a pigtail lead from the supply wires to the receptacle. My electrician prefers to run the supply wires, and also the wires to the downstream receptacles, to the screw terminals at t

     
  • Q&A: Installing 20-Amp Breakers

    Q: In a residential rewiring job, I am removing the existing conductors from steel flex conduit and installing new #12 solid wire, pulled through the flex conduit. Can I convert all of the existing 15-amp breakers to 20-amp breakers?

     
  • Q&A: 3/4-Inch Conduit Capacity

    Q: What is the maximum number of 12-gauge wires permitted in 3/4-inch conduit?

     
  • Q&A: Wiring Bathroom Lights

    Q: At several jobs, I have noticed that the electrician wires the bathroom light downstream from the bathroom GFCI receptacle. When the GFCI trips, the light goes out. Does this meet the NEC?

     
  • Q&A: Arc-Fault Circuit Interrupters

    Q: What is an arc-fault circuit interrupter? Are they expensive? Are they subject to nuisance tripping?

     
  • Computer Solutions: Selecting a Laptop

    How to select the right laptop

     
  • Notebook

    Liability for kids on the job site; builders selling Internet access with new homes; beetles plague California builder; growth control defeated in recent elections; more

     
  • Q&A: Upgrading Two-Prong Outlets

    Q: How about upgrading old two-prong ungrounded outlets from the ’70s and back?

     
  • Q&A: Should Older Wiring Be Updated?

    Q: When remodeling or adding to an older home, what are some things to look for that indicate the entire house’s wiring should be updated or replaced?

     
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    Q&A: Tying into Old Armored Cable

    Q: Can you keep old armored-cable circuits, or should you replace them? If you disconnect old circuits, what’s the rule around tearing out old wire versus leaving it buried?

     
  • Q&A: Tying into Aluminum Wiring

    Q: Why not just tie into aluminum wiring?

     
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    Q&A: Concealed Splices in Remodels

    Q: What are the rules for dealing with old concealed splices?

     
  • Q&A: Switching from 3-Wire to 4-Wire 240-Volt Appliance

    Q: How do you wire a four-wire 240-volt appliance (kitchen range or dryer) if there used to be a three-wire appliance there?

     
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    Q&A: Extending the Depth of An Outlet in Remodeling

    Q: When you add a new layer of finish, what is the easiest way to bring the electrical boxes flush to the new wall surface?

     
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    Q&A: Putting New Devices in Old Boxes

    Q: What are the choices for putting new switch and outlet boxes in old walls? Any hints for attaching the boxes?

     
  • Q&A: Tips for Snaking Wires

    Q: Any tips for wire-snaking?

     
  • Q&A: Wiring a Two-Pole GFCI

    Q: I have a 240-volt electric job-site heater, which is required by the NEC to be GFCI protected. Will a 120/240 two-pole GFCI breaker provide protection for a 240-volt load with no neutral? In what situations would a 120/240 two-pole GFCI breaker be recommended?

     
  • High-Tech Home Wiring

    Because of its greater data capacity and reasonable cost, Category 5 wiring has replaced conventional bell wire in custom homes. Here’s what you need to know to install it correctly.

     
 
 
 
 
JLC Field Guide to Decking