A hundred amps, answered.
A hundred amps deserves precise answers, pulled from the official Power-7HC documentation. Search, or jump by category.
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Inputs & cable
Why bolt terminals and lugs only, with no bare wire?
Because 100A demands real crimped connections. The two M5 bolt inputs accept ring, fork or lug style crimps only; bare wire and ferrules are not supported at this current. That does mean a crimping tool is required. The fork crimps article on quinled.info covers the exact parts and tools.
What cable do I need for 100A?
At least 2x 10 AWG, with 8 AWG and 6 AWG highly recommended, especially at 5V. The reasoning is blunt: a wire that's too thin can melt before a 60A fuse pops. Size the copper for the fuse protecting it, not for the average load you expect.
Why does it use two 60A fuses?
One bolt-down MIDI fuse sits behind each M5 input, between the input lugs and the after-fuse lugs; 2x 60A ship in the box and 60A is the maximum. Both inputs must come from the same power supply, and together the two fused paths carry the full 100A continuous rating. Like every fuse shipped with a Dig-Octa board, both are high quality original LittelFuse parts.
Power math
When do I actually need 100A?
Big 5V installs are the main case: watts eat amps quickly at 5V, and a single 300 LED 5V strip can use up to 13A. Megatrees, prop farms and dense permanent displays outgrow a 50A board fast. At 12V and 24V the normal Power-7 covers most projects.
How do I size a Dig-Octa stack for a megatree?
Work the math from the pixels. A 16-strand megatree with 100 pixels per strand is 1,600 LEDs: one Brainboard-32-8L handles that with channels to spare, about 200 pixels per channel across its 8 outputs. At 5V full RGB white that is 96A worst case and about 34A at a 35% effects load, so the Power-7HC's 100A continuous rating carries it with real headroom. Feed every strand group through its own fused output: a front feed carries about 4A and a mid-strand injection about 8A. Brainboard plus Power-7HC comes to $77.49 at quinled.shop, plus a 5V supply like the Mean Well LRS-600-5.
What wattage is 100A?
500W at 5V, 1,200W at 12V and 2,400W at 24V. The board accepts 5-24V like the other non-HV powerboards, and its extra-thick copper planes keep voltage drop low even at full current.
Are the outputs still limited to 10A?
Yes. The 16 screw-terminal outputs are identical to the normal Power-7: a 10A ATO fuse maximum per output and cable up to 12 AWG with a ferrule. The double-up trick still applies too: one SV5.5-5 fork across two adjacent terminals parallels two fuses for 20A on 10 AWG cable.
How hot does it run at 100A?
By design, roughly 25 °C above ambient at the full 100A continuous, the same thermal target as every Dig-Octa powerboard. The HC's thicker copper planes do the heavy lifting. Spread the load anyway: about 4A per front feed, 8A per middle injection, heavy and light runs interleaved.
Choosing & buying
Which power supply can even deliver 100A?
The official picks: Mean Well HRP-600-5 (125A at 5V), LRS-600-5 (100A at 5V) and SE-1500-12 (125A at 12V). The docs also mention HP server power supplies as a way to reach 1,200W, so 100A at 12V. Whatever you choose, keep it at or below about 80% of its rating continuously.
What does the HC add over the normal Power-7?
Same 16 fused outputs, double the input: 100A continuous instead of 50A via two M5 bolt terminals with MIDI fuses, plus extra-thick copper planes to keep voltage drop low. The price is heavier cabling, required crimp tooling and a higher cost. The normal-vs-HC page has the full comparison.
Where can I buy the Power-7HC and what does it cost?
At quinled.shop, which routes you to the trusted reseller for your region: Allnet ships worldwide (US$44.99 at the time of writing), DrZZs covers the US, Jerems covers Canada and QuinLED NL serves the EU. Both MIDI input fuses, 16 output fuses, M5 screws and stacking hardware ship in the box.
