My home in Charleston, SC is raised a full story with the garage
underneath. This past week I have been making changes to the spacing in
between the structural columns and in this process I moved my water
heater towards the interior about 10' (it was agfainst the outer wall
and because of lattice work, exposed to the elements).
I mounted a junction box with cover inside the insulated and sheet
rocked ceiling and ran an extension of 10 guage Romex to the new
location. I replaced the wooden water heater stand with a new metal
stand and extended the pipes using Pex and quick connectors. The stand
sits upon a concrete garage floor. I connected the Romex ground to the
appropriate location on the water heater.
All the pipes in my home are Pex or CPVC and as far as I can tell there
is no copper. While I was installing a new heater blanket I received a
"small" shock (i.e. like a tounge on a fresh 9 volt) whenever I touch a
screw on the water heater or the stand itself. I flipped the breaker
and checked where I wired the water heater to the new Romex to make
sure there was no connection to the heater - there wasn't and I added
another 1" of tape to make sure.
When I was shocked I was barefoot so it is possible it has been like
this since "forever" since I don't think I have had this type of
contact with the water heater before (always wearing shoes - if I have
ever touched the screws at all).
So, my question is - am I in danger? Even if no, how do I fix this? My
first inclination after reading other posts is that the water heater is
not grounded. The problem went away after I cut the breaker and
re-touched the water heater.
All help is appreciated -