Max Load Capacity of 12V Car Cigarette Lighter Socket: 120W, Fuse, USB Charger, H1 Bulb, Inverter

I need to know how much I can load the 12V cigarette lighter socket.
The car manual says that the maximum is 120W, the fuse (30A inserted, but it should be 10A ) is for the cigarette lighter + reversing light. The reversing light is a P21W bulb, i.e. 100W (8.3A) is left for the cigarette lighter.

I attach it to the lighter
- A power supply for a video recorder, at auctions I write that it takes 0.15A, and a charger with two usb sockets (router and telephone) such an ordinary Chinese one, I accept the second 0.15A.
- Rooster with H1 bulb. H1 has 55W, 55W / 12V gives 4.58A, plus the motor rotates the reflector, so probably 5A will be safe. Total 5.3A.

So there is 3A left for ... an inverter, I have no idea how much it can take, because the manufacturer does not say, the output is 600 / 1200W. It is run sporadically for a maximum of a minute.

Are the calculations correct and can the converter run on the rest of the devices?

Quote:

(inserted 30A but I think it should be 10A Smile)

If I were you, I wouldn't risk it like that. Put in the 10A fuse right away. Because it may turn out that the fuse will last and the wires will stick together and there will be no reason to laugh.

fsq wrote:

(30A inserted, but probably should be 10A )

Measure the resistance of the lighter itself and count how much current it will take, because the value of the fuse inserted was selected under it as a temporary load. The given load capacity of 120W will apply to a constant (long-term) load, about this I also have some doubts, due to the thinness of the cables to it.

fsq wrote:

So there is 3A left for ... an inverter, I have no idea how much it can take, because the manufacturer does not say, the output is 600 / 1200W. It is run sporadically for a maximum of a minute.

First of all, it depends on what you will connect to this converter. Its current consumption depends on its load.

Pull the plus point straight from the battery (with a suitably thick cable), plus the weight on the body also with a thick, decent cigarette lighter socket and you have an installation that you can charge more than the standard one. Leave the factory socket alone.

Javoreczek wrote:

fsq wrote:

So there is 3A left for ... an inverter, I have no idea how much it can take, because the manufacturer does not say, the output is 600 / 1200W. It is run sporadically for a maximum of a minute.

First of all, it depends on what you will connect to this converter. Its current consumption depends on its load.

Such a thing http://login.wamgroup.com/contents/rangemve/scheda.asp?unmis=m&fsn=n&codmve=55&codlang=1

marian6666 wrote:

Pull the plus point straight from the battery (with a suitably thick cable), plus the weight on the body also with a thick, decent cigarette lighter socket and you have an installation that you can charge more than the standard one. Leave the factory socket alone.

I thought about it, but it's hard to go through the bulkhead wall and you would have to do too much demolition and the car is not mine.

The inverter with this something connected will consume over 10A. The only reasonable solution is the one mentioned above with a separate battery cable.

So all about, thank you for your help.