Power - Other FAQs
How do I decide between a constant current LED driver and a constant voltage power supply?
Use a constant current driver when your LED modules specify a current rating (for example, 350–700mA) and provide a voltage range. Use a constant voltage supply (like 24V DC) when your LEDs or strips are designed to run at a fixed voltage and include their own current limiting. Match the technology to the LED’s specification for safe, flicker-free performance.
What does “gang” and “way” mean on switches and grid plates?
“Gang” is the number of switches or modules on the faceplate (1-gang, 2-gang, and so on). “Way” describes how a lighting circuit can be controlled; a 2-way setup lets you control the same light from two different switches, handy for halls and staircases.
Are wall sockets with built-in USB safe for daily charging?
Yes, when sourced from reputable brands and installed correctly. They’re designed to manage typical device charging safely and free up the main outlets for other appliances. For best results, choose models with proven overload and short-circuit protection and avoid covering the socket so it can dissipate heat.
When should I choose a screened cable like an SY or a CY type?
Pick a screened cable when electrical noise or mechanical protection is a concern—near motors, drives, or control panels. SY cables add a protective braid and basic noise reduction. CY cables add tighter electrical screening for better interference control. Use flexible, drag-chain-rated types for moving machinery.
What wire gauge should I consider for low-power control signals?
For typical low-power signaling, gauges around the 18–22 AWG range are common, depending on run length, current, and acceptable voltage drop. Always verify your device’s requirements and follow local regulations, and consult a qualified electrician for fixed wiring.