December 19, 2011 By Dave Rongey ©2007-2012Author - Licensed Electrical Contractor Filed under Cause of Dim Lights

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Lights Dim When Dryer Starts

Possible Causes of Dim Lights

• The power source is standard 240 with a 200 amp 40 space 40 circuit breaker panel.
• I have five 220 dedicated breakers.
• The problem I am having is, no matter what the load is in my house, my lights, mainly the recessed lights dim badly when the dryer or any other 240 appliances are turned on.
• It seems like it is getting slowly worse.

Any ideas?

This electrical question came from: Robert, a Homeowner from Sitka, Alaska.
See more about Home Wiring for Alaska

Dave’s Reply:
Thanks for your electrical question Robert.

Electrical Panels and Electric Dryer Circuits

1. Robert, all of the electrical wiring connections should be checked at the electrical panel, especially the lighting circuit.
2. This may be an indication of a loose electrical connection or a deteriorating connection with one of the main incoming lines at the panel as well.
3. This should be checked by an experienced electrical contractor.

The Following links will assist you with your electric dryer:

• Circuit Breakers
• House Wiring Circuits and Circuit Breakers
• Circuit Wiring
• Electrical Panel Circuit Listing
• Dryer Wiring
• Troubleshooting Electrical Wiring
• Types of Electrical Testers
• Using Electrical Testers

electric panel

• House Wiring Circuits and Circuit Breakers
• This article looks at common 120 volt and 240 volt house wiring circuits and the circuit breakers that are installed identifying the types and amperage sizes used in most homes.

electrical circuit

• Electric Circuit Listing
• The size of the home electrical service panel is designed by calculating the square footage of the home and factoring in the code requirements for the electrical circuits that are required.

For more information about Electrical Troubleshooting
Troubleshooting

• Troubleshooting Electrical Wiring
• Licensed Electrician Reveals the Secrets of Successful Electrical Troubleshooting Methods used to solve the majority of the home electrical problems and wiring failures encountered.