On Sun, 17 Feb 2008 10:52:25 -0600, Vic Smith wrote:
I've never used flex on a hot water heater, but suppose that flex
connectors have the di-electric insulator built in. Should be some
specs attached to that type of connector.

Hi Vic,

There is a black rubber grommet inside the copper flex tube's brass
fittings. Maybe that's the dialectric; but it's tremendously smaller than
the fist-sized dialectric unions we bought yesterday.

Donna