# Gauging surge protector outlet capacity question

I'm planning to use an 80A power supply (or two 40A ones) for multiple addressable LED strips. Each strip is max 90W, 20A. I want to use a single surge protected power bar for them, however they are all power bars I have seen are rated in joules.

So my question is, would an 800J power bar work without shutting off? I know 1W is equal to 1J per second, so a collective load of 3 LED strips amounting to 270W potentially would be more than sufficiently under this joule capacity of the power bar?

I'm not an electrical engineer, so hopefully this question makes sense.

Thanks

• No, it does not make much sense. Can you please describe what do you mean by power bar (a power strip maybe, which one, make/model/link?) and which power supply you mean, make/model/link? If you want to use a mains power strip with surge protection for power supplies, the overvoltage energy handling has nothing to do with the nominal rated current delivered to power supply. Commented Oct 6, 2021 at 20:57
• Looks like an XY problem where distribution of 80A and choice of cable and PSU is more critical than the power bar. Commented Oct 6, 2021 at 21:52
• @Justme what I meant by power bar would be these amzn.to/3FkkLQ1 I am just looking generally but I would like to make a smart purchase that could handle the load. The power supply would be something like this amzn.to/2YmzlW0. I'm not sure what you mean by the overvoltage energy handling...do you mean that I am confusing wattage and amperage as being irrelevant to joules? Commented Oct 6, 2021 at 22:03
• the rating in joules is for the surge not for the load. You need to estimate on your location the expected surge. There are tables for that Commented Oct 22, 2021 at 8:10