Relocating water heater or furnace? – don’t run any of the pipes in front of the house’s electrical panel – remember 36” distance from its face must be free of any obstructions.
Painting the wall? – don’t seal the electrical panel door with silicon or caulking; and don’t paint the breakers or panel interior (when spraying paint for example).
Building any frames / walls / cabinets / doors around the panel? – make sure that the front cover is easily accessible and removable. The cover might need to be unscrewed for servicing and sometimes, the opening left around it is not big enough to access circuit breakers / fuses. Also, always keep a 30”x36” clearances when building any enclosures.
Don’t place paneling, drywall, or any other wall finish materials between the cover and the electrical panel enclosure – it will separate them and raise the cover, creating gaps around the breakers (some electrical panel covers may have an adjustable depth section).
Do you have a legible description of all circuits inside the electrical panel? – It is required. Before testing all the breakers, turn off electronic equipment and disconnect any sensitive appliances, like the refrigerator. If you don’t have a electrical outlet tester, you can get one in every outlet store (they’re very cheap), or use a table lamp – it won’t tell you if it is wired properly but you can at least mark the breaker.
Is your electrical panel missing any breakers? – all openings should have special plugs installed (electrical supply store will have them, just tell them the panel brand) – notice on the picture that high voltage bars inside the panel are exposed. Especially if you have small children running around your house – take care of it!
Are there any holes (missing knockouts) in the sidewalls of the electrical panel enclosure? There should be special plugs installed to seal all the holes and prevent possibility of a fire spreading out of the electrical panel enclosure (any hardware store, measure the diameter).
Building a deck or doing some other exterior and interior remodeling – visit House Overhead Electric Service Improper Locations and House Electrical Panel in the Bathroom and Clothes Closet to see more common mistakes you’ve … maybe not .
This article was written by Dariusz Rudnicki
I'm a retired Illinois home inspector, founder and editor of checkthishouse.com, a blog which attracts around 2 thousand readers daily and is dedicated to answering the many questions of home owners and home buyers. Connect with me on Google+ Find me on Google+ Local