Extension Cord
We have found ourselves in a spot where we are going to have to live in our camper for a bit and need to purchase an extension cord that will reach the closest power. I am looking at a heavy duty 100...
Forum Discussion
drsteve wrote:myredracer wrote:
Sorry, but you clearly don't understand voltage drop in a branch circuit.
Yup... The outlet you plug the extension cord in to probably is not putting out 120V in the first place. To get a true idea of the voltage at the end of the cord, you need to know the real world voltage at the outlet. Not just the theoretical 120V number from the power company.
It's like using the brochure dry weight to figure out what you can tow.
The voltage will not drop until placed under load. When testing last fall on a hot day in the afternoon, I read 122 VAC on my EMS in my TT with just the converter using power with the battery charged. This was through 110' of 12 AWG from breaker box to the TT. Once I turned on the AirCon voltage read 107.7, added on the refrigerator then voltage read 104.5. At that point I was pulling 15.8 amps per the EMS.
I don't trust guesses or estimates any more than I have to. I prefer measurements. It's that submarine training thing ;)
