Apex Digital GT2715DV operation manual Antenna

BEFORE OPERATlON (continued)

Precautions (continued)

ANTENNA

Outdoor Antenna Grounding-if an outdoor antenna is instaIIed, foIlow the precautions below.

An outdoor antenna system should not be Iocated in the vicinity of overhead power lines or other electric Iight or power circuits, or where it can come in contact with such power lines or circuits.

WHEN lNSTALLlNG AN OUTDOOR ANTENNA SYSTEM, EXTREME CARE SHOULD BE TAKEN TO KEEP FROM CONTACTlNG SUCH POWER LINES OR ClRCUlTS AS CONTACT WlTH THEM IS ALMOST INVARlABLY FATAL

Be sure the antenna system is grounded so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical Code in USA and Section 54 of the Canadian ElectricaI Code(ANSl/NFPA

70)in Canada provides information with respect to proper grounding of the mast and supporting structure, grounding of the Iead-in wire to an antenna discharge unit,size of grounding conductors, Iocation of antenna discharge unit, con- nection to grounding electrodes, and requirements for the grounding electrode.

Example of antenna grounding according to NationaIEIectricaI Code (NEC )

Antenna lead-in wire

Ground clamp
			Antenna discharge	unit
			(NEC Section 810.20)
Electric service equipm	ent
		Grounding	conductors
Ground clamp		(NEC Section 810.21)

Power service grounding electrode system (NEC Air 250 Part H)

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