An electric blanket is a blanket that contains integrated electrical heating wires. Types include underblankets, overblankets, throws, and duvets. An electric underblanket is placed above the mattress and below the bottom bed sheet. This is the most common type in the UK and Commonwealth countries, where it is known by default as an "electric blanket"; in the U.S. and Canada, where it is less common, it is called an electric heated mattress pad. An electric overblanket is placed above the top bed sheet, and is the most common type in the U.S. and Canada, where it is called an "electric blanket".
Electric blankets usually have a control unit that adjusts the amount of heat the blanket produces by pulsing current at different intervals. Blankets for two-person beds often have separate controls for each side of the bed. The electric blanket may be used to pre-heat the bed before use or to keep the occupant warm while in bed.
Electric blankets use between 15 and 115 watts in general.
Some modern "low voltage" electric blankets have thin carbon fiber wires and work on 12 to 24 volts.
Much like heating pads, electric blankets use an insulated wire or heating element inserted into a fabric that heats when it is plugged in. The temperature control unit, located between the blanket and the electrical outlet, manages the amount of current entering into the heat elements in the blanket.
Some modern electric blankets use carbon fiber elements that are less bulky and conspicuous than older heating wires. Carbon fiber is also used as the heating element in many high-end heated car seats. Blankets can be purchased with rheostats that regulate the heat.
Newer electric blankets have a shutoff mechanism to prevent the blanket from overheating or catching fire. Older blankets (prior to about 2001) may not have a shut-off mechanism; users run the risk of overheating. Older blankets are considered fire hazards.
Some electric blankets work on relatively low voltage (12 to 24 volts), including those that plug in to ordinary household electrical outlets. In the US, such blankets are sold by Soft Heat, Serta, and Select Comfort. Such blankets also include 12-volt blankets designed for in-car use; they tend to shut off automatically every 45 minutes or so.
Old or damaged blankets are a concern of fire safety officials, due to the combination of heat, electricity, the abundance of flammable bedding material, and a sleeping occupant. In the United Kingdom in 2011, it was estimated that 5,000 fires per year were caused by faulty electric blankets.
Electric blankets also present a burn risk to those who cannot feel pain, such as those with diabetic peripheral neuropathy, or who are unable to react to it, such as small children, quadriplegics, and the elderly.
Use
There are more than 500 fires each year from electric blankets or mattress heaters alone. When buying an electric blanket, choose a blanket that meets the UL Standard in the US market or a BEAB Approved safety mark. Checking an electric blanket prior to use will also help ensure safety. Do not use if:
- There is discoloration on the fabric
- The fabric is frayed or heavily worn
- There are visible wires poking through the fabric
- There is an odd smell emanating from the blanket
- The blanket is over 10 years old
In order to prevent damage or harm:
- Do not use around water or wet areas
- Do not crease or fold the blanket while in use
- Do not use all night unless the blanket is specifically for all night use
- Heating pads and electric blankets should not be left unattended while on
For storage, it is best to carefully wrap the cords and gently roll the blanket. Excessive pressure in vacuum bags or under heavy items can damage the electric blanket.
- 1/2 pound imitation crab meat, flaked
- 1/2 cup Italian breadcrumbs
- 1/2 teaspoon onion powder
- 1/4 teaspoon garlic powder
- 1 teaspoon chopped fresh parsley
- 1/4 cup (1/2 stick) butter, melted
- 6 (6-ounce) salmon fillets
- Preheat oven to 350º. Coat a baking sheet with cooking spray.
- In a medium bowl, combine all ingredients except salmon; mix well and set aside.
- Cut a slit lengthwise 3/4 of way through each salmon fillet. Evenly divide stuffing into each slit and place on prepared baking sheet.
- Bake 15 to 20 minutes, or until fish flakes easily.