Antenna grounding

Important Safety Instructions

20.Ground All Outdoor Antennas – If an external antenna or cable system is connected to this product, be sure the antenna or cable system is grounded. This will provide some protection against voltage surges and built-up static charges.

Section 810 of the National Electrical Code ANSI/NFPA No. 70 provides informaiton 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, connec- tion to grounding electrodes, and requirements for the ground electrode. Refer to the antenna grounding illustra- tion on this page.

Information about products that generate electrical noise

If applicable, this equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, this is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment to an outlet on a different circuit than the one to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

Note: Unauthorized modiﬁcation of the receiver or radio remote control could void the user’s authority to operate this equipment.

This product complies with the Canadian ICES-003 Class B speciﬁcations.

Example of antenna grounding as per National Electrical Code, ANSI/NFPA 70.

Antenna lead-in wire

Ground clamp

Antenna discharge unit (NEC Section 810-20)

Grounding conductors (NEC Section 810-21)

Electric service
equipment	Ground clamps
	Ground clamps

Power service grounding electrode system (NEC ART 250, Part H)

Note to CATV system installer

This reminder is provided to call the CATV system installer’s attention to Article 820-40 of the NEC (of USA) that provides guidelines for proper grounding. In particular, it speciﬁes that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as is practical.

The Mountain, Framingham, MA

01701-9168 USA

255805 AM Rev.00 JN10494

January 10, 2002

AM262840_00_V.pdf