ARB Twin compressor air pump

[travelrover]

Hi team

Last year I bought a portable ARB twin compressor air pump and at the time the sales man told me that replacing the crocodile clamps with an Anderson plug was a simple task. A month or so ago I was looking at this in more detail and it is quite clear that the cables will not fit into the lugs on a 50 amp Anderson plug. Just too big. In reading the manual I also realized that the unit draws up to 80amps under load.

I dropped into the local ARB shop (where I bought the unit) during the week and was told it will run on the 30 amp system I have in my Defender, but I’m not so sure now and don’t want to set the thing on fire!

Has anyone manage to fit a 50amp Anderson plug and happily run the pump? Anything else I need to be aware of or other solutions?

Cheers - Simon

[Tins]

80 amps seems rather high, given the croc clips and the wire size. What is the fuse rating?

The chart below would seem to suggest that a 50 amp Anderson should be easily sufficient. However, talk to Tim ( drivesafe ) about real vs imitation Andersons.

185698

[Tins]

and don’t want to set the thing on fire!



That's what fuses are for.

[travelrover]

The pump has two 40 amp fuses, one for each compressor, In fact one was blown when I bought the thing new.
Do you have anymore details for drive safe? There are dozens when I google it.

[Tins]

Sorry. Tim is a member and vendor on here. He usually chimes in on auto elec stuff. drivesafe is his username.

Traxide Tronics | (https://traxide.com.au/)

[rrturboD]

you will see from this link, that there are 3 different sized lugs available for the standard 50A Anderson connector. One of these will fit.
Anderson Plugs & Accessories | Connector-Tech ALs (https://www.ctals.com.au/collections/anderson-plug-products)

[W&KO]

The pump has two 40 amp fuses, one for each compressor, In fact one was blown when I bought the thing new.
Do you have anymore details for drive safe? There are dozens when I google it.

The 40amp fuses are in place to protect the cable size that ARB are using, doesn’t mean the motors are pulling 80amps.

Is there a reason you want the compressor to be portable?

I opted to hard wire to the battery……had not other option given the compressor runs my air locker and rear suspension.

[Larry]

...........Is there a reason you want the compressor to be portable?.............

At a guess, because he has 3 x Defenders?:angel:

[travelrover]

At a guess, because he has 3 x Defenders?:angel:

Correct!!

[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

[travelrover]

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.

[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 .

[travelrover]

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 [emoji246] clips. The positive clip has two cables, so twice as ‘fat’ as the negative one.