How does electricity work?

[Mschmidt]

Allow me to give more explanation. I want to use fewer plugs on me surge protectors. I have three Kessil 360 lights (and a number of other DC powered devices, as we all do). I want one power supply to rule all three lights.

peak light demands are 19v and 90w.

To link them all I want an inverter that offers 19v and at least 270w? Is that how it works? what if the rating is in amps, what's the number then? Do I need to leave a power buffer (eg. 310w)?

 

[KStatefan]

If your current power supplies are 90 watts that should have a buffer already in it so you should be good with 270 watts.

 

[X-37B]

I use these. 100amp.
They work well. Just keep total amps below 100 on each one.
Easy to turn everthing off without looking for a plug.

 

[JoJosReef]

Are we running out of ideas for daily threads? ;-)

 

[fishguy242]

 

[JoJosReef]

You have to hit 88mph for it to work.

 

[FUNGI]

or in OP's case....0.833 amps....
LOL

 

[Mschmidt]

Are we running out of ideas for daily threads? ;-)

Not in the least. Haven't even started in on the "what's this" I now have pictures for.

But it is a question I have.

 

[Mschmidt]

So something like this
https://www.microcenter.com/product...r-universal-power-adapter-22-m-built-in-cable
And this
https://www.microcenter.com/product/650907/inland-1-to-8-power-splitter-cable
Should work?

 

[Mschmidt]

I use these. 100amp.
They work well. Just keep total amps below 100 on each one.
Easy to turn everthing off without looking for a plug.

That a power strip or inverter?

 

[The_Paradox]

Do all your devices have the same input voltages? In your case if they are all 19v at a max 90w you need a rail that supplies 19v@ > (number_of_devices x 4.74). So in your example 19@ a minimum of 14.22a. Amps don’t matter as long as it’s greater than your draw.

 

[Mschmidt]

Do all your devices have the same input voltages? In your case if they are all 19v at a max 90w you need a rail that supplies 19v@ > (number_of_devices x 4.74). So in your example 19@ a minimum of 14.22a. Amps don’t matter as long as it’s greater than your draw.

Yeah, three lights all the same 90w. So anything over 270w or 14.22a would work.

Thanks!

 

[Mschmidt]

How do amps play in? Could I add my skimmer, 24a @ 13.5w, to a source with say 19a @ 300w?

 

[The_Paradox]

Yeah, three lights all the same 90w. So anything over 270w or 14.22a would work.

Thanks!

Yes. Just don’t plug in anything that’s not 19v. The easiest way to do what you’re trying to do it’s make an octopus rig with a barrel connected splitting your DC line out 3 ways. You could get fancy and put barrels at each individual line for scalability/future proofing, but I would probably just cut the OE harness and splice.

 

[The_Paradox]

How do amps play in? Could I add my skimmer, 24a @ 13.5w, to a source with say 19a @ 300w?

Yes, but you would need to put in a buck converter in the skimmer leg. That’s where voltage specific barrels can come in handy to keep you from boning yourself in the future.

Watts is voltage times amps. Or watts divided by volts is amps. Or watts divided by amps is voltage.

 

[Mschmidt]

Yes. Just don’t plug in anything that’s not 19v.

Thanks. That answers my other question.

The easiest way to do what you’re trying to do it’s make an octopus rig with a barrel connected splitting your DC line out 3 ways.

So this or similar? https://www.microcenter.com/product/650907/inland-1-to-8-power-splitter-cable

You could get fancy and put barrels at each individual line for scalability/future proofing, but I would probably just cut the OE harness and splice.

You lost me.

 

[Mschmidt]

Yes, but you would need to put in a buck converter in the skimmer leg. That’s where voltage specific barrels can come in handy to keep you from boning yourself in the future.

Watts is voltage times amps. Or watts divided by volts is amps. Or watts divided by amps is voltage.

Watts is work done, amps is power, volts is speed?

 

[The_Paradox]

So this or similar? https://www.microcenter.com/product/650907/inland-1-to-8-power-splitter-cable

Not enough info there. You need to know the rating for each leg and main.

You lost me.

 

[Mschmidt]

Not enough info there. You need to know the rating for each leg and main.

I see. Thanks.

 

[JoJosReef]

Not in the least. Haven't even started in on the "what's this" I now have pictures for.

But it is a question I have.

Haha, yeah good question, really. Title just gave me a chuckle!