Other than a yellow color and some tinning of the socket contacts a NEMA L5-30 is a NEMA L5-30.. They are built to the NEMA L5-30 standard whether you buy marine or RV sockets they must all work together..


Many have said to me that the problem is not the design, but rather how boat owners improperly use these cords and don't use the locking rings. Do you see any locking rings on this dock pedestal? Why is there no locking ring at the dock end?


While many boats owners do improperly uses these cord sets, and this can lead to high resistance, many of them still fail and burn up even when being properly used with the locking rings properly used and installed.


Many of these locking rings fail within a few months use or just fall off and disappear entirely. Others simply cross thread them and ruin them. Should the ring falling off or cross threading even be possible if this is so critical to the performance of the cord set?


It is a combination of a poor design that is not well suited to the application and sometimes no option to use the cord-set properly even if an owner wanted to.