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Electrician Talk Forum
Current Draw Of Domestic Undercounter Fridges
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 312414" data-attributes="member: 250"><p>Erm????</p><p></p><p>am I missing something here? or is this a joke???</p><p></p><p>Supposedly we can design circuits.... But basic power calculations are "Not Helpful"...</p><p></p><p>consider:-</p><p></p><p>a) A 1.0kw electric fire switched on for 1 hour would consume 1kWh..</p><p></p><p>if its on all day it would be 24kWhrs.. </p><p></p><p>and its it is left on all year it would be (24x365) 8760kWhrs...</p><p></p><p>b) Now a fridge is normally on 24/7 365 days per year..</p><p></p><p>So if you have the annual consuption....</p><p></p><p>Its not too difficult. (or shouldn't be) to back calculate how much power per day / per hour..</p><p></p><p>and thus also get the current!!!</p><p></p><p>I just had a random look at a Curry's fridge 150kWh annually..</p><p></p><p>150/365 = 0.41kWh per day</p><p></p><p>0.41/24 = 0.017kW per hour..</p><p></p><p>or 17watt..</p><p></p><p>17watts/230v = 0.073amps!</p><p></p><p>Remember a 500w floodlight is only taking 2.17amps!!</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 312414, member: 250"] Erm???? am I missing something here? or is this a joke??? Supposedly we can design circuits.... But basic power calculations are "Not Helpful"... consider:- a) A 1.0kw electric fire switched on for 1 hour would consume 1kWh.. if its on all day it would be 24kWhrs.. and its it is left on all year it would be (24x365) 8760kWhrs... b) Now a fridge is normally on 24/7 365 days per year.. So if you have the annual consuption.... Its not too difficult. (or shouldn't be) to back calculate how much power per day / per hour.. and thus also get the current!!! I just had a random look at a Curry's fridge 150kWh annually.. 150/365 = 0.41kWh per day 0.41/24 = 0.017kW per hour.. or 17watt.. 17watts/230v = 0.073amps! Remember a 500w floodlight is only taking 2.17amps!! [/QUOTE]
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Current Draw Of Domestic Undercounter Fridges
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