Marine Electronics Forum

Dockside Power

Old 05-02-2008, 07:38 PM
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Default Dockside Power

Installed a Guest 2 bank battery charger on the boat. Dock side power is 20 amp out. Can I use a 15 amp rated outdoor extension to connect shore power to the battery charger. The unit is model 2620A 10,10 amps. 12/24 volts.
I know from nothing about electricity so any help would be appreciated.

thanks in advance. THT is great!
Old 05-02-2008, 08:14 PM
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Default RE: Dockside Power

The charger is rated at 10amps DC on each leg. If charging at full capacity, it would be putting out 20amps x 12v = 240 watts.

If the charger were 100% efficient you would be drawing a bit more than 2amps AC. Since it is less than 100% efficient you will draw a bit more, but certainly not anything to worry about with your 15amp-120VAC rated extension cord.

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