Watt loss because of long cable

[shimbob]

Imagine a setup of LEDs with a Vf of 98volts, a CC driver with Vf of 100V, and due to improperly sized wires, 3volts of wire loss. Doesn't matter if it's CC driver. The numbers matter.

 

[shimz]

You're the one that's not helping, idiot.

For the 3rd time: he's using a CONSTANT CURRENT DRIVER. It AUTOMATICALLY ADJUST THE CURRENT TO COMPENSATE FOR ANY LOSS OVER DISTANCE SO THE SIZE OF THE WIRE DOES NOT MATTER.

Read that about 25 times, dumbass. Maybe...just maybe it will sink in.

Again, not sure what all the angst is about, but having seen a good many of your posts over the years is seems you're trying to troll me. It won't work.

 

[TacoMac]

Again, not sure what all the angst is about,

It's about you being a dumbass confusing the OP with a bunch of absolute bullshit that has nothing at all to do with the question he asked.

You keep on talking about wire size and power loss when NONE OF THAT WILL HAPPEN.

It's people like you that are absolutely clueless that fuck people up with absolute bullshit that has nothing at all to do with their given situation. You're the kind of person that would start doing mouth to mouth on a guy that was choking to death and then swear to God and sunny Jesus that you were helping even as the guy dropped dead.

 

[shimz]

I get what you say about the CC driver compensating for the loss, but the loss does actually happen and it does matter what size wire if you wish to control the loss.
@shimbob gave an example of when even a small loss would make a difference even with a CC driver. Why can't we both be right?

 

[TacoMac]

I get what you say about the CC driver compensating for the loss, but the loss does actually happen and it does matter what size wire if you wish to control the loss.

No, it doesn't. Moron.

Here you go:

Constant current LED drivers are designed for a designated range of output voltages and a fixed output current (mA). LEDs that are rated to operate on a constant current driver require a designated supply of current usually specified in milliamps (mA) or amps (A). These drivers vary the voltage along an electronic circuit which allows current to remain constant throughout the LED system.

Source: https://www.ledsupply.com/blog/constant-current-led-drivers-vs-constant-voltage-led-drivers/

If he gets a power drop, dumbass, his light will simply not work. Constant current drivers CONSTANTLY monitor the circuit at close to the speed of light to maintain a constant power supply. If the wire is 1 gauge or 32 gauge it's not going to matter one single bit.

 

[shimz]

Not sure why you feel like you need to call me names. I know how this stuff works. OP's original question was: "will there be any losses?"
I got the data, crunched the numbers and told him exactly what the losses are. Yes, the driver will continue to output the correct current, but the input power will go up by the amount necessary to compensate for the wire loss. Are you trying to say that's not true?

 

[shimbob]

If he used 32ga wire in his situation that'd be a loss of 9volts, significant. He'd be screwed if his LEDs were Vf=140V

 

[CobKits]

He already has. Read. He's using a constant current driver. It automatically adjust current to compensate for any distance. If you have absolutely no clue what you're talking about, don't post.

right- it will give cobs correct current, but long runs still drop voltage and waste power. both things are true. with proper wire sizing and adequate voltage headroom there are no performance issues, but there will be efficiency losses (cobs still operate at correct voltage and current, but driver pushes more watts to get to that same performance)

there are lots of free online voltage drop calculators for different currents and wire sizes

 

[CobKits]

Imagine a setup of LEDs with a Vf of 98volts, a CC driver with Vf of 100V, and due to improperly sized wires, 3volts of wire loss. Doesn't matter if it's CC driver. The numbers matter.

in reality with a meanwell it would prob still work, albeit at slightly reduced current