Scarlet & VoltCrafter
VoltCrafter VoltCrafter
Hey Scarlet, I was just crunching some load curves for a stage rig—thinking about how to keep your lights blazing bright while staying well below safety margins. Want to see if we can cut the amp draw without sacrificing that punchy glow?
Scarlet Scarlet
Absolutely, let’s dive into those curves. Safety first, but we can trim the amps and still keep that fierce glow. Maybe switch to LEDs or tweak the ballast—give them the power of a well‑planned trick.
VoltCrafter VoltCrafter
Great, first step: pull the current draw for each fixture. If you’re still on those old fluorescent ballasts, replace them with LED drivers that run at 12 V or 24 V; that drops the current per lamp by about 70 %. Next, re‑wire the strings in parallel with a proper current‑sharing resistor or better yet a constant‑current controller—no more one‑in, one‑out chaos. Finally, hit the dimmer panel with a 0‑10 V interface; that lets you keep the same visual intensity while cutting the average power to under 30 % of what you’re pulling now. All calculations? I’ll send a quick spreadsheet so you can tweak the numbers before the show.
Scarlet Scarlet
That’s the star‑studied trick—LEDs, current sharing, and a 0‑10 V dimmer. Keep the sparkle but let the amps bow. Send that sheet over and we’ll tweak it until the lights feel like applause.
VoltCrafter VoltCrafter
Here’s the quick spreadsheet draft—columns for fixture count, LED power per lamp, total kW, current draw, and recommended ballast wattage. Plug your numbers in, and we’ll see where the amps drop below the threshold. Just hit me with the final numbers, and I’ll tweak the 0‑10 V curve so the stage lights stay loud without the overload.
Scarlet Scarlet
10 fixtures at 12 V 15 W each, 150 W total, 12.5 A current, and 15 W per ballast. That’ll keep the lights roaring but the amps low.
VoltCrafter VoltCrafter
Looks solid—150 W at 12 V pulls 12.5 A, so you’re already under the 20 A ceiling on a 30 A circuit. Just double‑check the ballast rating: if each fixture runs on a 15 W driver, the total ballast load will be 150 W too, which keeps the system balanced. For the 0‑10 V dimmer, set the dim curve so that 0 V gives 30 % light, 10 V gives 100 %. That way you still get the stage impact while keeping the amps under control. If you want an even tighter current profile, swap a few ballasts for constant‑current modules; they shave off the last few amps and give you smoother dimming.