Beautiful battery pack!
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Do you have a better source of information for this?
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Is the 90A rating of the XT90 a continuous rating or an instantaneous rating? If I plan to pull 60 battery amps * 2 ESCs = 120A, then would I have to go AS150 for my loop key?
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To answer my own question, I found this datasheet that rates the XT90 at 40A continuous/90A instantaneous at 500V DC. I dont know enough about electricity to know if running at 1/10th of that voltage (50.4V) would have an affect on the amp load that it can handle.
Can anyone with high-amp experience chime in on their loop key solution?
manufacturer’s website says rated 30a, instantaneous 60a. Almost looks like copy/paste error from XT60, but the XT60 page says 20a/40a. Amass used to have an English version, but it seems to be gone.
I found these guys have most of Amass’s products, with detailed specs (and decent prices on some stuff).
http://shop.smc-powers.com/XT90H.html?search=xt90
They show 90a/120a.
Maybe something happened, and Amass derated their connectors. Certifications maybe?
The mating cycles is also dramatically different, 100 times at Amass, 1000 times at smc…
These guys did a pretty good test, but it’s a single instance test… They did similar tests for a few connectors.
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Thank you for the video link. It looks as though your first link is broken BTW. From the test they did in the video, I would probably be fine running the XT90 loop key on a 120A setup, as I will likely not be pulling enough current for long enough to hurt the key.
You say XT90, and AS150. Do you mean XT90S? I think the resistor can burn out on XT90S. Not the end of the world if it happens though…
Mobile link not traslated http://www.china-amass.com/mobile.php/product/contain/15452ybw62z99793
Yes i was referring to XT90S, thanks for the clarification. My understanding was that the resistor is only in danger of burning out when the key is not fully inserted. Am I wrong?
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If you don’t plug it in all the way you’re at risk of fire. 
In normal use the resistor slows the rate at which the bulk capacitors in the esc charge, preventing a spark from the huge surge. If this current is high enough it tends to burn out the resistor in the antispark.
But, I’m an idiot. Sorry, wasn’t paying enough attention. The resistor is not in the circuit when fully connected so will not be affected by operational current, whether it’s 90a or 120a. Most likely it’ll be fine at 120a as long as it’s brief.
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Hmm… Actually, we should attempt to figure out where discrepancies in larger wire is coming from between our two charts. I also presumed I was pinged because yours didn’t have what was asked or something… but you obviously have things listed.
Anyways… yeah. The 8/6AWG stuff is concerning to me on my chart. Especially now that I think back to car audio. We used 2/0 runs on 300/350amp alternators.
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I think part of this discrepancy is because esk8 are small physically and so typically don’t have the lengths of wire that cars have. In addition to this, we mostly use wires that are silicone-insulated and thus high-temperature. Most wires I’ve personally seen in cars were plastic-insulated. (I’m not an auto mechanic, though) Yet another difference which is not specified is the maximum allowable temperature.
But these are good points, for sure.
None of these ratings are set in stone.
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Yeah, I’m also noticing the spec I have is noting 16AWG as 16.1mm^2 where yours is 13.3mm^2
Not a huge difference by any means, but I think your chart may have been for slightly larger diameter strands.
You’re probably correct about insulation being a major factor between use cases.
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My friend does electrical work and he swears that older 14AWG wire (decades old) is physically bigger than new 14AWG wire. Same for 12AWG, et cetera. He doesn’t deal with stranded wire, though.
Not sure where the truth lies.
Domestic, commercial and industrial electrical cables were definitely physically bigger in the past. More recently manufactured cable is rolled as part of the manufacturing process. Same amount of copper but more compressed. Not 100% sure but I would imagine having a more compressed conductor would reduce the skin effect of current on the conductor found in AC electricity.
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I have to mesureiro be sure, but I have two 12 AWG wires from different sources, one is Turnigy and another has no brand printed, by looking the Turnigy seems smaller
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Are they solid or stranded? It’s so hard to tell with stranded… some can have more stands but each strand is smaller and vice versa…
Stranded, will take a closer look to see if I can spot it. If I had a bench power supply it would be easy to test
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may I ask where you got your nickle amperage limits from? I’m looking at welding up a Molicel P42A pack and they run 45 amps for each cell!
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