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In Reply to: RE: Aren't Some Heavy Duty Appliances Hardwired? posted by Dynaudio_Rules on April 22, 2010 at 09:45:14
Dishwashers, cookers, and garbage disposal devices all come with plugs. Electric ranges have very large plugs and require the proper 50-amp outlets, but they are still plugs.
The only domestic apparatus likely to be hard-wired would be an electric water heater or a whole-house air conditioning condenser.
Follow Ups:
I posted those because the garbage disposal unit in my home was hard wired and so was the electric range and the separate electric oven.I never had to replace the dishwasher but I have seen dishwashers that were hard wired.
WARNING DO NOT WORK WITH ANYTHING ELECTRICAL INCLUDING WALL PLATES, WALL OUTLETS, AC CORDS, AC CORD ENDS, OR ANYTHING THE CONDUCTS CURRENT.
Music Is The Bridge Between Heaven & Earth - 音楽は天国と地球のかけ橋
Edits: 04/24/10
Those appliances are mostly a motor and switch, and in the case of the dishwasher, low voltage electronic circuitry or a mechanical timer, controlling solenoids. Not very complex, and a fuse or circuit breaker should clear any malfunction that poses a fire risk. If you've ever seen sparks, smoke and flame shoot out of the vents of an amp or TV with so-called protection circuitry, you would understand why hardwiring by itself is not advisable.
A lot of hardwired heavy duty equipment has a main disconnect of some kind to shut off power in the case of an emergency or when servicing is required. I worked in a shop in the 1980s that had a lot of hardwired machinery. Each unit had its own double pole disconnect switch on the wall.
I think if amps were to be approved for hardwiring, they would need such disconnecting means. IMO, we would be replacing one evil (plug and receptacle) with another (DPST snap switch).
Those appliances are mostly a motor and switchNo motors inside of electric cooktops or built in ovens, also no motors in electric water heaters.
If you've ever seen sparks, smoke and flame shoot out of the vents of an amp or TV with so-called protection circuitry, you would understand why hardwiring by itself is not advisable.
Nope never seen that happen in over 40 years, but have seen some blown fuses....and tripped circuit breakers. My guess is that if anyone has seen sparks or smoke or flame shoot out of an electrical appliance the house does not have modern circuit breakers. Now-a-days circuit breakers will trip pretty easily.
A lot of hardwired heavy duty equipment has a main power disconnect of some kind to shut off power in the case of an emergency or when servicing is required.
Which is why hardwiring only the wall end is best....leave the component end with a IEC plug. In this way you eliminate two birds [the outlet and the male plug] while still having the same safety as anyone would have with a cord encapsulated to the gear with a plug on the end....that is ONE connection to disconnect from power. Its like moving the plug to the end of a power cord.
WARNING DO NOT WORK WITH ANYTHING ELECTRICAL INCLUDING WALL PLATES, WALL OUTLETS, AC CORDS, AC CORD ENDS, OR ANYTHING THE CONDUCTS CURRENT.
Music Is The Bridge Between Heaven & Earth - 音楽は天国と地球のかけ橋
Edits: 04/24/10
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