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2
ELECTRIC
SERVICE
EQUIPMENT
NEC-NATIONAL ELECTRICALCODE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250 PART H)
GROUND CLAMPS
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
ANTENNA
DISCHARGE UNINT
(NEC SECTION 810-21)
ANTENNA
LEAD IN
WIRE
Important Safeguards
12. Use only with the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/
apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when left unused for a long
period of time.
14. Refer all servicing to qualified service personnel.Service is required when the
apparatus has been damaged in any way, such as a damaged power supply
cord or plug; liquid has spilled on or foreign objects have fallen into;the appa-
ratus has been exposed to direct rain or moisture; the apparatus does not
operate normally or has been dropped.
15. If an outside antenna or cable system is connected to the product, be sure
the antenna or cable system is grounded so as to provide some protection
against voltage surges and built-up static charges. Section 810 of the Na-
tional Electrical Code, ANSI/NFPA No. 70-1984 (Section 54 of Canadian
Electrical Code, Part 1) provides information with respect to proper ground-
ing of the mast and supporting structure, grounding of the lead-in wire to an
antenna-discharge unit, size of grounding conductors, location of antenna-
discharge unit, connection to grounding electrode. See the illustration below
for details.
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