Power draw from various DC appliances

[DavidM]

We were out last night for a shake down campout nearby so I measured the current draw of various DC appliances:

Parasitic load- CO, propane detector probably- 0.1 amp
LED double light fixture, both on-  0.2 amp
Water pump- 5 amps
Furnace- 3 amps (that was a bit of a surprise i expected more)
Slide out- 6 amps until the motor locks at the end, then 20 amps
Water heater- 0.5 amp (gas solenoid valve)
Fridge- Didn't use but I would expect it to be similar to the WH after it is lit

So, excluding the furnace as most of us don't use it in the summer, this is what a theoretical amphour usage would be assuming the fridge runs 50% of the time and with the minutes used noted below:

Parasitic 24 x 0.1 = 2.4 amps hours
Slide out- 30 seconds x 6= nil
Water heater (assumes you turn it on for just 15 minutes for shower) .25*.5= 0.1
Lights- One double and one single for two hours- 2*.3= 0.6
Water pump- 10 minutes running time- .17*5= 0.8
Fridge- 12*0.5= 6 but call it 8 for burner lighting

So, it all adds up to about 12 amp hours which is consistent with what I have experienced. I can do three days of camping with our 70 AH battery and the battery will be about 50% discharged.

I am installing the Drok battery monitor and I will have better amphour data after that is done and a few campouts.

YMMV.

David

[Merlin]

Thanks for the data!  Good info.

[MitchB]

That's right in line with my experience also.  On the fridge, even though it (the propane) only runs 50% of the time wouldn't the electronics be running 100%?

Mitch

[DavidM]

That's right in line with my experience also.  On the fridge, even though it (the propane) only runs 50% of the time wouldn't the electronics be running 100%?

Mitch

Yes, but I suspect the fridge electronics DC requirements are small, less than 0.1 amp.

David