How Long is Safe for an RV Power Extension Cord

For long distance power 100 feet 10-15 amp, enough for ac or microwave plus various battery chargers, I will use a heavy duty extension #12 cord which is enough on not hot days. The limit I found was the plugs which tended to get hot and soft, Plugs can be upgraded. A hundred foot rated 30 amp cord would be a beast to carry,

The cord on my TT is 35 feet long. I have 2 - 50 foot 30 amp cords. That's a total of 135 feet of cord with 30 amp draws more times than not. Never a problem running anything inside the camper. Run the air conditioner and microwave at home (and campgrounds) all the time.

Rather than getting one 75 foot cord, get two 50 foot cords. It give you more versatility.

I purchased new 50 foot cords a year ago. They run approximately $2.00 a foot. Do the math, and you'll come pretty close to the price on any RV cord.

Depends a lot also on what voltage you have to start with. Lot of difference if the park has 125 vac or 110 vac at the pedestal. Or somewhere in between.

I've exceeded that and everything worked fine. No drop.

Of course there 'is' a formula for foot vs voltage drop.

But I don't see it when using excessive length cords for the MH at the sporting events I attend where I swear sometimes the shore power is a block away. AND half the MH's use regular 15 amp extension cords!







MH's parked 4 rows away all plugged in and ready to go! :B