Several of the places we dock have standard household 3-prong outlets for
shore power. We want to buy an adapter to match the shore power cable from
our boat to this kind of outlet. I see two kinds. One is called a hand
adapter and is simply a block of plastic about 4" long with the plug and
socket molded into it. The other is a 1 foot long cord with the plug and
socket at the two ends. Is there any reason to prefer one over the other?

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Peter Aitken