Dock light and recp. pedestal

[papa]

Had a service call at a floating dock yesterday, turns out utility had lost one leg to service. Looked at installation while there see any problems?

100 amp. 240/ 120 mlo panel mt. on ramp to floating dock, powered by 3 wire use feeder from service , grd. rod driven at ramp , neutral bar isolated

panel has five 30 amp gfci s/p breakers suppling power to five pedetals on float via 8/3 rubber cord in sealtite flex, down under water and up to ped.

pedestals have 1 light , 2 gfci 120 v, 20 amp recp. all protected by 2, 20 amp. built in breakers

ramp and float are alum.

 

[jumper]

100 amp. 240/ 120 mlo panel mt. on ramp to floating dock, powered by 3 wire use feeder from service , grd. rod driven at ramp , neutral bar isolated

Shouldn't this be 4 conductor cable for a sub panel?

panel has five 30 amp gfci s/p breakers suppling power to five pedetals on float via 8/3 rubber cord in sealtite flex, down under water and up to ped.

Gotta be something with this? I do not have a clue, but it seems wrong.

ramp and float are alum.

Seems there should be a bonding requirement. Water, metal, and electricity.

 

[rodneee]

Had a service call at a floating dock yesterday, turns out utility had lost one leg to service. Looked at installation while there see any problems?

100 amp. 240/ 120 mlo panel mt. on ramp to floating dock, powered by 3 wire use feeder from service , grd. rod driven at ramp , neutral bar isolated

panel has five 30 amp gfci s/p breakers suppling power to five pedetals on float via 8/3 rubber cord in sealtite flex, down under water and up to ped.

pedestals have 1 light , 2 gfci 120 v, 20 amp recp. all protected by 2, 20 amp. built in breakers

ramp and float are alum.

sounds like a breeding ground for electrolysis...i would be surprised if the boat owners get a full season out of there zincs

 

[suemarkp]

GFCI on a GFCI -- which will trip first, or will both trip? Is there a requirement for the feeder to be GFCI protected. Would go with one or the other if possible.