Can anyone give any opinions on how voltage drop should be calculated for a marina pier and branch circuits. Would you have to calculate it on actual load(which varies) or on the devices being installed since the service size is based on the device size and quantity? The next question is about the gas pumps and distances to electrical installations. The code states that the 20 foot distance is based on the distance to the dispenser. Would you consider the nozzle(which is usually attached to a 50 foot hose)as part of the dispenser or do you limit it to the actual dispensing unit. Now for residential installations, which art.555 does not cover, would you require a duplex mounted on a power pedestal on a pier at a home to have an "in use" cover? The most time cords are left plugged in are at marinas and residential piers. Hey Mike, how do they handle this in Florida?