Doctor BagThe Shock Doctors              Progressive Electrical Services Ltd
            ECRA/ESA #7001377
      Home electrical problems diagnosed, treated and cured... guaranteed.

Writing your Prescription for Electrical Safety          Apr 2011 

In This Issue
Recessed Lighting
Insulation rated Potlights
New Technology
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We are asking for your help 
 
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 When you are done, don't forget to read the rest of your newsletter. This month we have discussed some key points you may need to know if you are thinking about putting in pot lighting.

Terry Carman RME

 

   

Thank you,

Terry Carman RME 

Chief of Staff

at the Shock Doctors 

 

 

Recessed Lighting

Recessed lighting offers a clean, streamlined look in a home and is the number one choice for creating ambience in any room.  It is used to increase the amount of light in a room, opening up spaces so they look and feel bigger. Correctly laid out, it can highlight wall pieces and will turn wall textures or draperies into art.

The type of ceiling dictates the choices available to you.  Ceilings of concrete or those with ornate plasterwork or delicate molding details are not good candidates for recessed lighting. In these spaces, choose a chandelier, or track lighting (if there is already an electrical box in the ceiling), wall sconces, or table lamps instead.

Specially-rated Insulation-Contact Potlights

Putting pot lights in a ceiling with attic space directly above requires special fixtures as well as special installation techniques.  Standard potlights cannot be used. The fixtures must be designated "IC" (insulation contact). To prevent the chance of fire, these fixtures have a metal box around the lamp casing to create airspace between the hot light fixture and the insulation. The fixtures also have an internal thermal overload that disconnects the power to the bulb before critical temperatures are reached.Roof ice damn

If the fixture has not had the insulation properly installed around it or  if the attic is not properly ventilated, condensation will be created in cold weather promoting the growth of mould.  In some cases it can even melt snow on the roof causing an ice dam that will damage your roof and shingles.

Approved liners form a sealed vapour barrier around the IC pot light in the attic space. These liners are available for all makes of pot lights. This barrier is especially important if spray foam insulation will be used in the attic space. (Spray foam insulation is a must-have Mike Holmes recommendation.)

 

Stages of a Pot Light Project

 

Scott dressed for the attic
Ready for the attic work
Pot Light Layout
Scott and Scott lay out the pattern

  Laying out the pattern is dependent on whether you are using the lighting to provide ambient light (even lighting throughout the room), using it to highlight wall art (accent lighting), or using it to create increased texture on the wall (wall grazing). A symetrical layout is more visually appealing.

 The layout appears easy on the ceiling, but it must be compatible with the layout of the ceiling joists above the ceiling.

 When attic space is involved, the two man job is accomplished with "walkie talkies" head lamps and insulation-protective mask and gear.

 

Finished ceiling
 6 pots were added to this large open space improving dark areas in the center of the room that were poorly serviced by standing lamps.

 

The type of bulbs you choose will alter the overall look of the project. The bulbs in this installation peek out and give a nice overall glow to the room. Recessed bulbs provide a slightly more subtle glow.

Being able to dim these lights provide the greatest flexibility to set the ambiance of the room.

LED POTLIGHTS

New technology just out! 

LED potlights. They are only 2 cm deep so they do not infiltrate the attic.  You don't need to make layout concessions to get around ceiling joists either. They are great energy savers using less than 30 watts and generate no heat. We have seen these in demonstration and the light emitted is excellent.

Ask the Doc
Dear Doc, I just moved in to my new-to-me home and one of the main floor family room potlights blink after it has been on about 10 minutes. What's up?

Dear What's Up, Pot lights in an insulated ceiling have a thermal cut-out to protect you. Before the temperature reaches a dangerous level, the cut-out shuts off the light to allow it to cool to prevent a fire. If only one of the lights are blinking, it is almost certain that the thermal cut-out is FAULTY and should be checked to ensure there isn't an overheating hazard. If it is faulty, it will need to be replaced.
If it is not faulty, the installation will need to be checked.
Always ensure that you do not have an oversized bulb in the socket.
Do you have a question for the Doctor?
If you have a question about the health of your electrical system or would like to investigate a little "plastic surgery", ask the doctor: Click and send your question to  ask.us@theshockdoctors.ca.
 
Thank's so much for helping us with our survey!

We really appreciate it!

Cheri  Cheri@theshockdoctors.ca 
  
The Shock Doctors 
 
         ..... Happy Easter!

 

 

 

 

 

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