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Old June 14th, 2018, 10:20 AM
ShawnB ShawnB is offline
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Location: Greenville, SC
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HS-WS200+ LED vs resistive load ratings

In my shop, I have 162W LED linear high bay lights, wired 3 per switch.

The HS-WS200+ specs list 1800W (15 amp) resistive load but only 200W LED/CFL load.

Since this is a switch and not a dimmer, is there a reason why the LED load spec is so much lower than the resistive load?

I haven't opened one up to look at it, but if the load is switched by a 15A relay, isn't 15 amps = 15 amps regardless of the type of load??

Thanks,
Shawn
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Old June 14th, 2018, 06:36 PM
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Fellhahn Fellhahn is offline
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Might be related to limiting inrush current, which could potentially damage the switch?

https://www.meanwellaustralia.com.au/news/avoiding-led-driver-inrush-current-problems
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Old June 15th, 2018, 03:38 PM
ShawnB ShawnB is offline
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Interesting, thanks -- that makes sense. Sounds like a lot of variables to inrush current, so 200W would be a safe/conservative rating without knowing all the details of the load.

Seems odd that with the proliferation of LED's, inrush current limiting devices are not readily available online. Also, odd that the spec sheet for my lights does not list inrush current (they are newer, commercial lights).

Makes me wonder if the ~1 second delay when turning on newer LED lights may be related to inrush current limiting components built into the driver.

Guess I need to open up one of the lights and see if I can find a spec sheet on the driver. A lot of the concern about inrush current seems to be when there are many (8+) individual drivers wired in parallel on one circuit, so maybe I'm overthinking it.
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