Kill A Watt power reading charge (KAW)

[montgom626]

I hooked up the KAW.
1461 Watts
Ambient temp in garage 79 degrees Fahrenheit
120v at 12 amps

What does it all mean?

Plugged in.jpgCharger.jpgKill a watt 1461.jpg

[Cord]

ONE good item is the Volts charging system has a PF of 0.99
which means the watt reading and the Volts-amps reading are almost the same.

What was the voltage ?

I saw a few Kill A Watt meters at a demo of LCD floodlights in Home Depo the other day and the PF I saw was
1.00 for the normal light and 0.80 for the LCD. The set up was just to show the lower watts -

[montgom626]

What was the voltage ?
-

I did not check. What effect does that have??????

[bonaire]

A lower voltage will mean a higher amp draw during the charging. Can lead to a little more energy loss, so that could mean longer charging and a bit more kWh used from the grid.

For example:
Watts = Volt * Amps
1440 Watts = 120V * 12A
1440 W can also = 110V * 13.09A

The charger on-board will draw the same wattage so a lower home's Voltage could lead to slightly higher amperage. Hopefully, you're at or even possibly over 120V. I've had 121V on my kill-a-watt meter at times (just looking at home devices). It may be due to the location of the transformer out in front of our house.

You can get slightly lower voltage off the grid if it is a hot day and the community has all their air-conditioners on. Electronics are supposed to work at voltages between about 110V and 130V.

[DonC]

Not exactly what you're asking or why you mentioned temperature. It's saying the 120V EVSE is pulling 1461 watts from the outlet. That's a little high but the number will bounce around somewhat. The 120V EVSE should pull a maximum of 1440 watts (120V X 12A).

The power factor is just the ratio of real power to apparent power. Hopefully you'd be way under one.

[Ladogaboy]

Fourteen 100-watt light bulbs!