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Old 23rd February 2006, 01:41 PM   #1
newby is offline newby  Canada
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Join Date: Dec 2005
Location: Ottawa
Default rocker switch

Hi there,

I want to install some rocker switches for my 250w light kit and fans from DIYprojectorcompany and I just wanted to know if they have to go by the voltage or amps? e.g. 10A/120vac.

Thanks
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Old 24th February 2006, 01:33 AM   #2
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Join Date: Oct 2005
the switch *should* match your usage specs... but it is <i>possible</i> that you could safly use a 120v switch in a 220v enviroment although i wouldnt recomend it simply becasue you should use the corectly rated hardware. I would definatly stick with the same amperage though....
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Old 24th February 2006, 02:04 AM   #3
herm is offline herm  United States
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Join Date: Mar 2002
Location: Pasadena, CA USA
>> I just wanted to know if they have to go by the voltage or amps? e.g. 10A/120vac.

Both!

First, your switch has to be rated for 120VAC use.

Then, it has to have a rated current larger than your load.

For a 250 watt load at 120 VAC, you expected current is
250 divided by 120 = 2.1 amps

To be safe, get a switch rated at least 4 or 5 amps.

Need some recommendations?

Look here:

http://www.allelectronics.com/cgi-bi...,_16_AMP_.html

http://www.action-electronics.com/switches.htm#Rocker

http://www.meci.com/index.php/cPath/132_335
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Old 24th February 2006, 01:00 PM   #4
newby is offline newby  Canada
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Thanks Herm. That's exactly what I wanted to know.
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Old 24th February 2006, 02:12 PM   #5
dnsey is offline dnsey  United Kingdom
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Join Date: Mar 2004
Location: Shropshire, England
Best for this application are the dual gang switches made for fan (blow) heaters. These allow the fans to be on without the heater (read lamp), but not the other way round.
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Old 24th February 2006, 02:20 PM   #6
newby is offline newby  Canada
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Join Date: Dec 2005
Location: Ottawa
dnsey, are refering to a switch with 2 ONs and an OFF in the middle so if I set it to one off the ONs,the fan will runn and when I switch it to the other ON, the fans and light will work?
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