NOTE: Provide a "detail."
**************************************************************************
On multi-grounded circuits, as defined in IEEE C2, provide a single
continuous vertical grounding electrode conductor. Neutrals, surge
arresters, and equipment grounding conductors shall be bonded to this
conductor. For single grounded or ungrounded systems, provide a grounding
conductor for the surge arrester and equipment grounding conductors and a
separate grounding conductor for the secondary neutrals. Grounding
electrode conductors shall be sized as shown. Secondary system neutral
conductors shall be connected directly to the transformer neutral bushings,
then connected with a neutral bonding jumper between the transformer
neutral bushing and the vertical grounding electrode conductor, as shown.
Grounding electrode conductors shall be stapled to wood poles at intervals
not exceeding 600 mm 2 feet. On metal poles, a preformed galvanized steel
strap, 15.9 mm 5/8 inch wide by 0.853 (22 gauge) 22 gauge minimum by
length, secured by a preformed locking method standard with the
manufacturer, shall be used to support a grounding electrode conductor
installation on the pole and spaced at intervals not exceeding 1.5 m 5 feet
with one band not more than 75 mm 3 inches from each end of the vertical
grounding electrode conductor. Bends greater than 45 degrees in grounding
electrode conductor are not permitted.
3.11
FIELD TESTING
**************************************************************************
NOTE: Select types to suit project conditions and
delete all others. Delete all paragraphs not
applicable. Tests must be justified.
**************************************************************************
3.11.1
General
Field testing shall be performed in the presence of the Contracting
Officer. The Contractor shall notify the Contracting Officer [_____] days
prior to conducting tests. The Contractor shall furnish materials, labor,
and equipment necessary to conduct field tests. The Contractor shall
perform tests and inspections recommended by the manufacturer unless
specifically waived by the Contracting Officer. The Contractor shall
maintain a written record of tests which includes date, test performed,
personnel involved, devices tested, serial number and name of test
equipment, and test results.
Field reports will be signed and dated by
the Contractor.
3.11.2
Safety
The Contractor shall provide and use safety devices such as rubber gloves,
protective barriers, and danger signs to protect and warn personnel in the
test vicinity. The Contractor shall replace any devices or equipment which
are damaged due to improper test procedures or handling.
3.11.3
Ground-Resistance Tests
The resistance of [each grounding electrode system] [each pole ground]
[_____] shall be measured using the fall-of-potential method defined in
IEEE Std 81. Ground resistance measurements shall be made before the
electrical distribution system is energized and shall be made in normally
dry conditions not less than 48 hours after the last rainfall. Resistance
measurements of separate grounding electrode systems shall be made before
SECTION 16370A
Page 41
Previous Page
