wrote in message
...
An electrician is burying an unprotected UF-B wire on my property. In
places it is approximately 4" (yes inches) below grade. I am quite
certain
this does not meet code. Can anyone tell me:
Minimum depth for buried wire w/no conduit
Minimum depth with electrical PVC Conduit
Minimum depth with electrical emt Conduit

Thanks!!


Generally speaking 24" is minimum for UF (18" for one and two family homes)
and 18" for PVC. EMT is not permitted for direct burial however rigid
galvanized is. If a 120 volt, 20 amp circuit is GFI protected it is
permissible to run the wire at 12". I don't recommend the lesser depth or
the use of a GFI to protect the entire run of wire as it will be more
subject to nuisance trips. For more details look up table 300.5 in the
National Electrical Code.