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More Wires Need Bigger Boxes
The National Electrical Code limits the number of wires in a box. Here's how to figure the size box you need.
— by Clifford A. Popejoy
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Wiring a House: Lightning and Surge Protection
If you understand how lightning surges get into the house, it's easy to add equipment to keep them out
— by Rex Cauldwell
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 Drilling Holes Through Studs in Tight Places
What to do when the drill and bit are longer than the space between the studs
— with Cliff Popejoy
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Code Check Electrical: Sizing an Electrical Service
Although a 200-amp service is adequate for most residences, calculating the actual load is a good idea. This chart from Code Check Electrical can help you with your calculations.
— by Redwood Kardon, Michael Casey, and Douglas Hansen
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Code Check Electrical: Service Equipment Guidelines
A practical guide to the requirements of the National Electric Code
— by Redwood Kardon, Michael Casey, and Douglas Hansen
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Code Check HVAC: Air-Conditioning Guidelines
Specs for heat pumps and swamp coolers
— by Redwood Kardon, Michael Casey, and Douglas Hansen
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Running Cables Through Existing Walls
Installing switches and receptacles in walls that are finished doesn't mean drilling lots of holes
— by Rex Cauldwell
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Three Ways to Mount an Electrical Box in a Tight Spot
With limited space to swing a hammer, there are still ways to install the box securely
— with Cliff Popejoy
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Ten Common Wiring Problems
A master electrician details some frequently found mistakes that could cost you your house or your life
— by Rex Cauldwell
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Ten Common Plumbing Mistakes
A building inspector reviews the most frequent violations of the plumbing code
— by Redwood Kardon
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Hydronic Radiant-Floor Heating
Concrete slabs, thin slabs and metal plates offer different ways of
routing radiant heat underneath every floor in the home
— by John Siegenthaler
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Choosing a Toilet
A head-to-head comparison for our readers with nothing to go on
— by Steve Culpepper
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Stop Ceiling-Fan Blade Wobble
Using the balancing clip is a tedious job, but necessary when all else fails
— with Fernando Pagés Ruiz
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