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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Lighting Modifications Forum [GEN 1]
M&R Fog Light kit - extra option
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<blockquote data-quote="gwpfan" data-source="post: 765315" data-attributes="member: 14481"><p>Honestly don't deal with diodes much, but deal with wire and transformer sizing.</p><p></p><p>So in the wiring diagram you want Aux 3 to be able to turn on all the 10W lights? </p><p></p><p>With the arrow direction that is showing the current flow and how it would work...</p><p></p><p>Your using the 15 amp circuit to light up the 60W circuit and the 30 amp circuit to light up the 20 W circuit...</p><p></p><p>W=VA [Watts=Volts*Amps] where W=sum of watts on circuit</p><p></p><p>V=12 volts, but loss of 0.7 volts across diode, so V=11.3 (loss varies based on diode)</p><p></p><p>120W/11.3V = 10.62A on LED Bar</p><p></p><p>40W/11.3V = 3.54A on Aux 2</p><p></p><p>60W/11.3V = 5.31A on Aux 3.</p><p></p><p>Recommendation is to size diodes 20-50% over rated current, so you need a diode rated for 6.372A (5.31*1.2) to 7.97A (5.31*1.5). Also same with the volts so 14.4 to 18V, but higher is okay.</p><p></p><p>Also with diodes over 5A a heat sink may be needed - <a href="http://www.ehow.com/how_7433946_choose-right-diode.html" target="_blank">http://www.ehow.com/how_7433946_choose-right-diode.html</a></p><p></p><p>One could get away with a smaller diode if this circuit switched relays instead of the LED's directly since the relay watts would be much less than that of the LED's.</p><p></p><p>Hopefully someone else will chime in...</p></blockquote><p></p>
[QUOTE="gwpfan, post: 765315, member: 14481"] Honestly don't deal with diodes much, but deal with wire and transformer sizing. So in the wiring diagram you want Aux 3 to be able to turn on all the 10W lights? With the arrow direction that is showing the current flow and how it would work... Your using the 15 amp circuit to light up the 60W circuit and the 30 amp circuit to light up the 20 W circuit... W=VA [Watts=Volts*Amps] where W=sum of watts on circuit V=12 volts, but loss of 0.7 volts across diode, so V=11.3 (loss varies based on diode) 120W/11.3V = 10.62A on LED Bar 40W/11.3V = 3.54A on Aux 2 60W/11.3V = 5.31A on Aux 3. Recommendation is to size diodes 20-50% over rated current, so you need a diode rated for 6.372A (5.31*1.2) to 7.97A (5.31*1.5). Also same with the volts so 14.4 to 18V, but higher is okay. Also with diodes over 5A a heat sink may be needed - [url]http://www.ehow.com/how_7433946_choose-right-diode.html[/url] One could get away with a smaller diode if this circuit switched relays instead of the LED's directly since the relay watts would be much less than that of the LED's. Hopefully someone else will chime in... [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Lighting Modifications Forum [GEN 1]
M&R Fog Light kit - extra option
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