I have a kitchen faucet whose surface consists of a base metal ring, a body
sleeve, and a metal handle. At first glance it appears all metal parts are
in contact with each other. Measurements reveal the base metal ring is
grounded (measured 0 volts AC and several ohms to a grounded receptacle's
ground pin), but the sleeve and handle are not grounded.
Is there any code violation here? This faucet is 20 years old. I don't mind
replacing the faucet if it helps.
It is normal. Do NOT count on plumbing as an electrical ground. Do not
use plumbing as an electrical ground. It can be damaging to the plumbing
and can be dangerous. You outlets should all be grounded themselves. All
outlets near a sink should be GFI protected.
In an old home you may not have proper modern grounding. Assuming it
was installed correctly to start with, has not been defeated by later
modifications or had some sort of failure due to accident or age, you do not
need to update except under certain conditions.
Why does this matter? Probably grease and o-ring seal are preventing a good
connection. I assume newer houses with plastic water lines none of the
faucets would be grounded. Seems like this would be safer if somehow you
got between a hot line and the faucet. Of course plugs in kitchens and
bathroom should be GFI anyway.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.