Electrical Advice From an Experienced Professional

Ground TV and Telephone	Concentric Knockouts
Install A/C Outlet	Aluminum Wire
Basement Finished	Power Strip Surge Protection
Homeowner Buys Materials	Test GFCI Bathroom Receptacle

Dear Mr. Electrician: How do I ground my telephone and cable TV demarcation terminal blocks?

I want to install an outlet on a dedicated circuit for my window air conditioner.  I've got it figured out how to run the 12/2 NM-B cable from the circuit breaker electrical panel in the basement up through the wall under the living room window. How do I install an electrical receptacle box in the wall that will contain the wire and support the receptacle?

I am planning to have my basement finished.  I called several carpenters, plumbers, electricians and heating contractors to give me suggestions and estimates on what could be done.  The prices that they came back with are all over the place.  Not one contractor's quote in any trade is close to another's.  Can you help me sort this out?

I want to get a bunch of electrical projects done around my house.  I talked to several licensed electrical contractors about the work.  I told each one that I would pay for the materials and that they should just figure on furnishing labor and tools.  None of the electrical contractors were receptive to my plan.  Why do you think that was?  Are materials a big profit maker for electricians?

I am installing a sub-panel next to the main electric service panel in my basement. What is the best way to remove the pre-punched concentric knockouts to the correct size that I need without loosening the remaining outer rings?

I am planning to have the electrical service to my house upgraded and the licensed electrical contractor that I will be using told me that he will be installing aluminum wire for this.  Is aluminum wire safe to use?

What is the best kind of surge power strip that will protect my computer from lightning if it should hit my house?

I push the "Test" button on my bathroom GFCI receptacle occasionally, but nothing seems to happen. How do I know if the GFCI receptacle is working properly?

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