Originally Posted by hmason
Is it safe to plug two 50' 50amp cords together to create a 100' cord? I confess I did not read the 60 previous posts. ♨️♨️
Safe as in nobody will get electrocuted? Yes.
Safe as in your electrical appliances will get the voltage the need to operate normally? Possibly not.
As pointed out above, the longer the cables, the more voltage drop there will be, especially at high loads. Doubling the length of the shorepower cable will cause double the voltage drop. This can cause problems for air conditioning and refrigeration equipment. Many marinas have low voltage problems to start with, especially at the outer slips.
The bottom line is, it's poor practice and you shouldn't do it unless you have no other choice. If you do, limit your use of high amperage equipment such as air conditioners, electric heat, water heaters and electric stoves.