Do not overload electrical outlets. Install according to manufacturer's recommendations. Do not use electrical appliances near the bathtub. Check water temperature before getting into a bath, and keep your water heater set no higher than 120 degrees to prevent children from getting burned accidently. Do not run extension cords in front of doorways or under carpeting.
Power strips with surge protection are safer than extension cords.
Space heaters are NOT recommended. Never leave a fire unattended. Use a screen to keep hot ashes from leaving the fireplace area. Remove ash from fireplace regularly and place in a metal container with a metal lid. Make sure ashes are completely cool before removing from the container.