A/C and Arizona Heat Wave
I am having AC and voltage related issues which have showed up with high temperatures. 118 yesterday, same for today, and who knows for how long. I started having cooling issues with the heat. My Mach...
Forum Discussion
Davidlee64 wrote:
RV is at my house. I am not sure what gauge the wire is running to the outlet, or the the breaker on the outside wall from the house. It was already here and setup for an RV. There is a dedicated 30A cb for the RV outlet. I didn't feel like opening the panel to inspect the wire gauge. It is about 150' (min) from the house to the breaker box, and another 75' to the socket to plug into. I suspect a below minimum wire size as the conduit to the plug is 1/2" metallic.
I have a 120 foot run and I used 8 gauge wire.It works well.
Some people will say that smaller gauges are rated for higher currents, but they don't realize that the voltage drop is a factor. Not just the ability of the wire to carry a given current. Both have to be taken into account.
My wire size calculator says for 150 feet of 8 Gauge wire with a 30 amp draw there will be a 3.5% volt drop and there will about 15 1/2 volts available at the RV. Since you have an additional 75 feet with an unknown wire size. 8 Gauge may not be adequate.
