shore power cord length

[Fordguy5507]

Well, i moved to a new seasonal site over the weekend. And due to a tree my shore power is about 12 feet too short. since i already have the marinco mod done, my plan is to buy a 50 ft extension cord and change the end into the camper. At 37 feet of cord should i be worried about any voltage drop? Thanks.

[Jopopsy]

https://bethepro.com/wp-content/uplo...sion-cords.pdf

Handy .PDF to have every once in awhile.