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Neal Bryant

Powering Alexa From Master Sled

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I can't seem to find anything in the search or any literature anywhere on what gauge wiring is inside the Master sled.

 

I used Afton's wonderful instructions to add a second battery to make my sled native 24v, and I've powered several 24v cameras just fine, but I'm a little concerned about the 85w Alexa.

 

Still, the Master has a 15amp breaker. An Alexa at 24v draws roughly 3.5 amps, add another 4 amps for AKS and I should be well within the limits... I've never had a bad experience with my Master wiring, I just want to be triple sure that I don't blow anything up!

 

Whenever I've used the Alexa in the past, I just run an onboard battery, but I would like to shave a little weight.

Edited by Neal Bryant

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I don't have the answer you are looking for, but I bet Dave Grove, Peter Abraham, Afton, and many others have run 435s at 120-150 fps without issue (granted they don't run that hot for long periods of time).

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Thanks for the reply, Brian. I think it would be fine, I just wish I could find out exactly what gauge the wiring is, then at least I could make an educated guess.

 

I have powered Epics (60w) with full AKS, so that's not far behind the 85w Alexa.

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Not sure what the gauge is or if this picture helps, but I recently removed the lower I/O panel from my Master sled and this is one of the power cables that I cut that goes up the post from the 24v adapter.

 

 

post-7011-0-73708800-1408674578_thumb.png

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Thanks for the responses, guys. I also had it measured today and was told it was 16AWG. Just doing a bit of research looks like it's well within the limits.

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On this job I prepped today it looks like I'm going to keep an onboard battery anyway just to get fore/aft balance. With my Alexa plate from Cinematic Precision and this Fujinon 19-90, a lightweight brick back there is giving me just what I need. Although, it's nice knowing that I could choose to power the camera from my sled should the need arise. Up until now I've been too gun-shy to try.

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When I overhauled my master rig, I recall the wiring being fairly substantial - I think 16awg. It would power an Alexa, as well as high speed 435 work, no problem.

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