We tow our 5 th wheel with a 1999 Ford F250 Diesel (The good one a 7.3 ) I recently went on O-2 . The O-2 generator uses Lithium Batteries, and comes with a plug so the batteries will remain charged while traveling. Have herd of some fires because the Automotive wires were to small and overheated. I figure we need at least 14 Ga. wire. These batteries are 17 volt, so that is a heck of a pull on a 12 volt system. I have a new alt. and batteries on the truck. I may have to replace a wire that has never ben used....

How many amps ? 14 Ga. wire sounds small to me but I do not know what an O-2 is ?

Oxygen.You need to look on the unit and determine what the watt/amp draw it is rated for.

Are you plugging into a cigarette lighter in the truck?Whats the model of the o2 so we can get the specs..

Actually 17 volt battery will feed a 12 volt system. You may need an inverter to plug in the adapter. Or do you have a DC/DC converter to supply 17 volts from 12? Post the amp rating of the charging adapter for a wire size recommendation. Otherwise my guess is #8 minimum.

I had a family member that we went traveling with, using a portable concentrator. The 12v cord became noticably warm during use, so it was pulling some amps.I wouldn't worry about automotive wires catching fire, they're protected against that by fuses. Although almost 20 year old vehicle, connections could be worn?If this is long term, consider having a heavy 12v outlet put in, using 10 ga wire and a 30 amp fuse, right off the car battery.

Wire Size | Good Sam Community

wanderingbob
Explorer II
Feb 02, 2018
How many amps ? 14 Ga. wire sounds small to me but I do not know what an O-2 is ?
donn0128
Explorer II
Feb 02, 2018
Oxygen.
You need to look on the unit and determine what the watt/amp draw it is rated for.
lawrosa
Explorer
Feb 02, 2018
Are you plugging into a cigarette lighter in the truck?

Whats the model of the o2 so we can get the specs..
time2roll
Nomad
Feb 02, 2018
Actually 17 volt battery will feed a 12 volt system. You may need an inverter to plug in the adapter. Or do you have a DC/DC converter to supply 17 volts from 12? Post the amp rating of the charging adapter for a wire size recommendation. Otherwise my guess is #8 minimum.
GordonThree
Explorer
Feb 02, 2018
I had a family member that we went traveling with, using a portable concentrator. The 12v cord became noticably warm during use, so it was pulling some amps.

I wouldn't worry about automotive wires catching fire, they're protected against that by fuses. Although almost 20 year old vehicle, connections could be worn?

If this is long term, consider having a heavy 12v outlet put in, using 10 ga wire and a 30 amp fuse, right off the car battery.
pianotuna
Nomad III
Feb 02, 2018
Does the Oxygen concentrator come with a 12 volt plug?

I would not go with #14 wire. #8 or even #6 may be better.
lawrosa
Explorer
Feb 02, 2018
I read this on a typical O-2 gen.

Yes they have dc cig adapter.

:

AC Input: 100 to 240VAC
50 to 60Hz
Auto-Sensing: 1.0A
DC Power Cable DC Input: 13.5-15.5VDC,10A Max.
Rechargeable Battery: Voltage: 12.0 to 16.8VDC
lawrosa
Explorer
Feb 02, 2018
Found this too...

Ensure that the automobile power socket is adequately fused for the Inogen
One® G4 power requirements (minimum 15 Amp). If the power socket cannot
support a 15 Amp load,the fuse may blow or the socket may be damaged.
GordonThree
Explorer
Feb 02, 2018
6 or 8 gauge cable is unnecessary for a 10 -15 amp load and just making it harder to install.

I'm a fan of overkill but only within reason.
time2roll
Nomad
Feb 02, 2018
Depends on length. The standard RV 12v cigar connector is rated 8 amps.

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