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Electrical Wiring Safety and Home Inspections

How to Troubleshoot Home Electrical Wiring Problems: Testing Electric Circuit Wiring, Home Electrical Wiring Inspection, Upgrading Older Home Electrical Wiring.

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Troubleshooting a Reverse Polarity Problem
Electrical Question: Why does my tester show that the neutral wire and the hot wire reversed?

Do you have any suggestions?

Background: Wes is a Homeowner in Lancaster, Pennsylvania.

Dave’s Reply:
Thanks for your electrical wiring question Wes.

Application: Troubleshooting a Reverse Polarity Wiring Problem.
Skill Level: Intermediate to Advanced – Best performed by a licensed electrical contractor or certified electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with hand tools and electrical troubleshooting skills.
Precaution: Identify the circuit, turn it OFF and then Tag it with a Note before performing any wiring or inspections.

Troubleshooting Outlet Circuit Wiring

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Basic Home Electrical Wiring by Example

Dave's Guide to Home Electrical Wiring:

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Great for any Home Wiring Project.
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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

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FAQs Frequently Asked Questions and Comments

6 Responses to “Electrical Wiring Safety and Home Inspections”
  1. emmanuel says:

    how can i make connection on a four way circuit to feed 2 lights, originally wired with 2 wire cable all the switchs.

  2. Dave Rongey says:

    Hi Emmanuel – here are wiring diagrams that will help you:

  3. JC says:

    Will a Ground Fault Circuit Interrupter or Residual Current Device(termed in USA) help in making my home safer for electrical accidents?

  4. Dave Rongey says:

    A Ground Fault Circuit Interrupter will help prevent electrical shock in areas where required, such as bathroom outlets and kitchen counter top outlets and outdoor receptacles to name a few.
    Equally important are the AFCI or an Arc Fault Circuit Interrupters, which will help prevent fires when an arc is detected, and are required for new circuits in areas including bedrooms.
    Both the GFCI and AFCI require either a special circuit breaker or receptacle, and the circuit wiring must be appropriately configured as well.

  5. Vertice Green says:

    I purchased a home that required minor repairs. Among the repairs were replacing the lighting fixtures in the bathrooms. I purchased a new light fixture from Lowes. Each bathroom has two light fixtures. The first fixture has two black and white color lines, but the second fixture has only one of each line. After replacing the light fixtures and restoring the power only the second fixture works. There is no activity from the fixture with two lines. Please help me understand what have I wired incorrectly?

  6. Dave Rongey says:

    Hi Vertice,
    First, be sure the light bulb in the first light fixture is new or good.
    Next, make sure the wiring of the first light fixture is made where the wires are connected color to color, that is: the black wires together, and the whites wires together, and the same for the ground wires.
    Also be sure that one of the wires from the light fixture to the line wire splices has not slipped out of the wire connector, which is a very common and easy mistake to make, but very easy to fix.
    Enjoy your new lights,