Are you a subscriber but don’t have an online account?

Register for full online access.


Other stories by Rex Cauldwell

  • Q&A: Water Treatment for Acidic Water

    Q: In the April 2000 issue of JLC (Letters), Rex Cauldwell recommended treating acidic water that eats copper pipe. Our water has a pH of 6.2 and definitely eats copper. What kind of water treatment equipment do I need? retrofit; painting interior brick

  • Q&A: Venting a Basement Toilet

    Q: I am installing an in-floor ejector pump for a basement toilet. Obviously, a wet vent is not possible, since I don’t want any upstairs fixtures discharging into the sump pit. How do I vent the toilet?

  • Q&A: Faulty Dip Tubes in Water Heater

    Q: I have an

  • 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?

  • Q&A: Electrical Panel Location in Kitchen

    Q: In a new house I am building, I would like to locate the electrical service panel under a counter. This would put the top of the panel at a height of about 34 inches. Is there a reason this shouldn’t be done?

  • Q&A: Adding a Garbage Disposal

    Q: My clients want to add a disposal during a remodel of their 1950s kitchen. The 2-inch waste line runs at a shallow pitch for about 30 feet (with three right-angle bends) before diving into the main 4-inch cast iron line. Over nearly 50 years, they’ve had only a few clogging problems with this...

  • Q&A: Rules for Splicing Romex

    Q: I want to lower receptacle outlets from 4 feet off the floor to 18 inches. I plan to make a splice at the existing receptacle and extend the new wire down through the stud cavity. Can the junction box be inside the wall or does code require that you have access to it by using the existing outlet...

  • Q&A: Mechanical Plumbing Vents

    Q: I saw a "rubber diaphram" device marketed as a cap for vent pipes that terminated in the attic. Its advantage was that it did not pierce the roof (highly desirable for expensive roofs like slate and tile), yet it would work to equalize pressures in the vent system. No mention of noxious gases or...

  • Plumbing Venting Explained

    Ever wonder why the plumber insists on notching and boring the framing to run all those vent lines up through the house? A master plumber explains the whys and wherefores of venting rules, and tells how he goes beyond code minimums to avoid callbacks.

  • Q&A: Electrical Fluctuations

    Q: I am having an electrical problem on a second-story addition I am currently building. The clients report that the lights dim periodically during the early morning hours, but that it’s not related to the refrigerator starting nor any other piece of electrical equipment in the house. I have tested...