Thread: ARB Twin compressor air pump

Originally Posted by prelude

for what it's worth:

I have owned and operated dozens of UPS systems for the computing industry and one of the common models was a 1600watt unit that used 24V batteries. They were connected through a 50A Anderson connector. 1600watts at 24volts would pull 66Amps for something like 10 minutes during a power failure before either the systems were properly shut down or before the emergency generator would kick in. I have tested them extensively and the connector hardly gets warm to the touch at that current. Since you are not likely to run the system for any longer than 10 minutes? I think you can rest easy.

You do want the contacts to remain CLEAN to make sure you do not have unneeded resistance and with that voltage drop over the connector at such currents though since that will heat thing up very quickly!

Cheers,
-P

On a similar vein, some 25 years ago I was regional operations manager for a global telco in Syd and we lost the a/c in one of our UPS facilities supporting an international gateway over a long weekend. Didn’t take long for the batteries to fail/commence meltdown. The entire UPS and dozens of batteries required replacement which cost a significant amount. Turned out a sparkie had actually turned off some fans that caused the issue.

Originally Posted by dero

Mine has been connected in the car for years with 50a anderson plugs , no problems .
It has blown a 40a fuse a couple of times .
It gets well used .

My problem is connecting It to the Anderson plug. I have managed to get hold of a couple of AWG8 lugs which have a much wider opening for the cables so will have a go at connecting them instead of the clips. The positive clip has two cables, so twice as ‘fat’ as the negative one.