Check labels of lights to be used outdoors to see that they are suitable for outdoor use. Never use indoor lights outside. Fasten outdoor lights securely to trees, walls, or other firm support to protect them from wind damage. Use no more than three sets of lights per single extension. Read the manufacturer's instructions carefully and do not use more than the recommended number of lights in one outlet.
Candles Never use lighted candles on a tree or near other evergreens.
Always use non-flammable holders. Keep away from other decorations and wrapping paper. Place candles where they cannot be knocked down or blown over. Telephones Holidays bring peak load on the telephone utilities. Each year, many people add home computers and additional phone lines.