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Ask The Electrician – Electrical Questions and Answers Database

Troubleshooting and Repairing Electrical Wiring Problems: Licensed Electrician shares the Methods of Electrical Wiring that are used to solve the majority of home electrical wiring problems, and shows how home wiring projects are performed.

Over 3100 Electrical Questions and Answers

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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

34 Responses to “Ask The Electrician – Electrical Questions and Answers Database”
  1. brandon says:

    I bought a air compressor it’s says on the tank 240v/15a/60hz. The tank is only 20 ft from the box I ran 10 gauge wire. I installed a Double Click 20 amp breaker, then attached the black wire to one side of the breaker and the white to the other and same to the pressure switch and it wouldn’t run right. I then test the voltage and only have 110. It’s a square d box how do I get 220v?

    • Dave Rongey says:

      Hi Brandon,
      If you have installed a Twin or Tandem circuit breaker then the circuit breaker will only produce voltage from the same buss on the panel, because that is the construction design for most twin or tandem circuit breakers. Either a full size 2-pole breaker must be installed or if the panel does not have enough free space then a quad breaker may be installed if permitted for that panel.
      When using a 2-wire cable for 240 volts you must code the white wire either black or red because it is no longer being used as a neutral.

  2. Meg says:

    These are great DIY guides, very detailed and quite informative as well as concise and straight forward.

  3. JP says:

    Are there any code requirements that pertain specifically to outlets installed in a cabinet kick space?

    • Dave Rongey says:

      Hi JP,
      I am not aware of any specific codes for receptacles in a kick space, however codes for the specific room or area will apply, such as in the kitchen area where receptacles must be GFCI protected.
      Note that receptacles have been installed into baseboards mounted at the floor level without any problem.
      I hope this helps,

  4. Larry Kueneman says:

    I want to build a couple of electric kilns for the fusing of glass. The construction details are a snap, but I need to understand how to design the electrical part. Do you have guidelines or a reference?

    Thanks for your time.

    • Dave Rongey says:

      Hi Larry,
      Before going straight into the construction process of the kilns you may want to examine traditional kilns to identify their various components and how they operate. Achieving the correct temperature and then regulating it will most likely be the key for the success of your application. The materials and construction methods of the kiln will have alot to do with energy efficiency and optimal performance. The overall concern is of course safety, which covers all aspects of the unit and the various phases of operation to achieve your final product.
      The electrical components will be based upon the required temperature. The voltage and amperage will be essential for sizing the components, many of which will be rated for the heat within the unit.
      The higher the voltage the better the performance and efficiency, for example 240volt rather than 120volt.
      Over current circuit protection as well as thermostat control and high limit safety sensors or switches should be incorporated into the design as well.
      Also be aware of environmental or location concerns where the unit will be installed and operating. Addressing safety issues such as work space and ventilation will be a factor.
      Search for a popular brand kiln and download the operation and maintenance manuals for more information that may be helpful for your project.
      I hope this helps,

  5. Dave Labs says:

    Hi, Dave
    As a handyman I replaced a small hotplate in a Defy hob. The same size as before, 3 white wires from the switch to 4 points on the plate. Connected the new plate the same as the old one which had burst the surround ring. The new plate only warms up, and does not get hot.
    Without a voltage tester, can I establish which should be earth? Do I need to?

    • Dave Rongey says:

      Hi Dave,
      A voltage tester is always the best way to check circuit voltage and wiring. If the hotplate is not warming up all the way then the wiring should be checked to ensure proper voltage. It would be good to check to make sure the control switch is functioning correctly as well.
      Thanks for sharing your electrical question with us,


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