BenStark Posted September 22, 2023 Share Posted September 22, 2023 The 16A 220V breakers in my CU have a 1.5mm wiring, which is deemed appropriate. 16A x 220V = 3520 Watt. Now I'm building a PC and have to extend the power wire to my DVD writer, which consumes about 30 Watt at 12 Volt = 2.5A When I search what size of wiring I need, I get as result 1mm. What am I missing here? Link to comment Share on other sites More sharing options...
KannikaP Posted September 22, 2023 Share Posted September 22, 2023 10 minutes ago, BenStark said: The 16A 220V breakers in my CU have a 1.5mm wiring, which is deemed appropriate. 16A x 220V = 3520 Watt. Now I'm building a PC and have to extend the power wire to my DVD writer, which consumes about 30 Watt at 12 Volt = 2.5A When I search what size of wiring I need, I get as result 1mm. What am I missing here? I doubt you can buy cable less than 1 sq mm. Is the writer not connected via USB, or internally via SATA if that's what it is? And what is a DVD writer used for these days......yeh, writing DVDs! Link to comment Share on other sites More sharing options...
BenStark Posted September 22, 2023 Author Share Posted September 22, 2023 2 minutes ago, KannikaP said: I doubt you can buy cable less than 1 sq mm. Is the writer not connected via USB, or internally via SATA if that's what it is? And what is a DVD writer used for these days......yeh, writing DVDs! My question was not what should I use a DVD writer for, so thanks for going off topic on each and every thread you enter. I can get wires from 0.25 - 0.50 - 0.75 mm, but that was also not my question. The question was why I need a 1mm wire for a 2.5A 30W load. Link to comment Share on other sites More sharing options...
KannikaP Posted September 22, 2023 Share Posted September 22, 2023 6 minutes ago, BenStark said: My question was not what should I use a DVD writer for, so thanks for going off topic on each and every thread you enter. Quotes and examples please. 1 Link to comment Share on other sites More sharing options...
BenStark Posted September 22, 2023 Author Share Posted September 22, 2023 1 minute ago, KannikaP said: Quotes and examples please. On my ignore list you go 1 1 1 Link to comment Share on other sites More sharing options...
KannikaP Posted September 22, 2023 Share Posted September 22, 2023 7 minutes ago, BenStark said: My question was not what should I use a DVD writer for, so thanks for going off topic on each and every thread you enter. I can get wires from 0.25 - 0.50 - 0.75 mm, but that was also not my question. The question was why I need a 1mm wire for a 2.5A 30W load. You say you 'searched' for the correct cable size. Where did you search please? The SSDs in my PC are connected with 'bigger than 1mm' cables, mainly because SATA cables are made that way. 1 Link to comment Share on other sites More sharing options...
KannikaP Posted September 22, 2023 Share Posted September 22, 2023 1 minute ago, BenStark said: On my ignore list you go Thanks. 1 Link to comment Share on other sites More sharing options...
Fruit Trader Posted September 22, 2023 Share Posted September 22, 2023 1 hour ago, BenStark said: Now I'm building a PC and have to extend the power wire to my DVD writer, which consumes about 30 Watt at 12 Volt = 2.5A When I search what size of wiring I need, I get as result 1mm. What am I missing here? You are likely not missing anything and picked up a result that has taken length into consideration. .5 or .75 multi strand cable will suffice for the short length you require. Most PC power connectors have the shared ground (black) doubled up. 1 Link to comment Share on other sites More sharing options...
BenStark Posted September 22, 2023 Author Share Posted September 22, 2023 (edited) 11 minutes ago, Fruit Trader said: You are likely not missing anything and picked up a result that has taken length into consideration. .5 or .75 multi strand cable will suffice for the short length you require. Most PC power connectors have the shared ground (black) doubled up. That is also what I would have thought, but I googled for 30 watt wiring size, and all results were US quotes, claiming 18 AWG was what I needed.v Some even suggested 16 AWG Here are just 3 results https://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html https://battlebornbatteries.com/battery-cable-size/ https://info.waytekwire.com/wire_sizing Edited September 22, 2023 by BenStark Link to comment Share on other sites More sharing options...
Fruit Trader Posted September 22, 2023 Share Posted September 22, 2023 12 minutes ago, BenStark said: That is also what I would have thought, but I googled for 30 watt wiring size, and all results were US quotes, claiming 18 AWG was what I needed.v Some even suggested 16 AWG Here are just 3 results https://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html https://battlebornbatteries.com/battery-cable-size/ https://info.waytekwire.com/wire_sizing Google results can make you crazy - look at this one for 18AWG https://portablepowerguides.com/how-many-amps-can-18-gauge-wire-handle/ 1 Link to comment Share on other sites More sharing options...
Popular Post Crossy Posted September 22, 2023 Popular Post Share Posted September 22, 2023 If you need to extend your power supply => DVD drive wiring, just buy an extension cable ???? To be honest, at the current we are talking about <0.5mm2 is more than adequate, using bigger is more a matter of mechanical robustness than current carrying capability. 3 1 Link to comment Share on other sites More sharing options...
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