I see a spark when plugging in a 45 Series product.

When "hot plugging" a live PS-24 jack into the 24V DC input, it is typical to see a small spark. The spark is harmless as such, but to avoid it, plug the DC jack in first, then apply AC power. Be sure the DC plug is pushed ALL the way in.


Keywords: spark, sparking, flash, plugging in, power supply