I am looking for advice on safety precautions to take while mounting a TV to an interior wall with multiple light switches and outlets.
The wall is standard wood/drywall and I have located two studs 16" apart that the mounting plate will be secured to.
My concern is that on the other side of the wall there are two light switch boxes (secured to each of the studs I need to mount to). There are also two floor outlet boxes in the middle of the studs (one on the TV side of the wall, one opposite on the other side).
The TV is 49" and weighs 29 pounds. The mounting kit I purchased contains 2 1/4" long lag bolts meant for securing the wall plate to studs.
If I have identified the centre stud locations correctly, am I right to assume there is little chance of hitting wire running vertically (which would be stapled to side of the stud)?
Similarly, am I right to assume that, if using these bolts, there is a chance of hitting live wire running horizontally through the studs (which would be at minimum 1 1/4" into the stud + 1/2" drywall = 1 3/4" deep)?
In this case, would it be OK to use a shorter bolt (1 1/2" long or 1 3/4" long) for this size/weight TV? That way I don't have to worry as much about the longer bolts hitting horizontal wire.
Any other safety precautions to take? I plan on shutting all power off at the breaker prior to any drilling.
EDIT: I found a photo of the house during renos which shows the wall framed & wired. After this photo was taken we did have our contractor extend the wall by another couple feet, but I doubt that would have changed the existing wiring configuration. From the photo, I see horizontal wiring running roughly a foot above the floor outlet. There doesn't appear to be any metal plates on studs with horizontal wires (unless they were added at a later date...)