View Full Version : Antenna in Attic
ssabin
January 9th, 2004, 05:14 AM
I recall a post in the old forum which explained the rules for bonding a roof antenna, as well as the cable shield. My question is whether or not the bonding requirements apply if the antenna is in the attic rather than roof-mounted?
My intuition says yes, but I thought I'd ask the experts.
Thanks!
Wgoodrich
January 9th, 2004, 04:17 PM
Same applies whether inside or outside when it comes to grounding an anttenae. See following copied section of antennae grounding found in NEC 810.21
(E) Run in Straight Line. The grounding conductor for an antenna mast or antenna discharge unit shall be run in as straight a line as practicable from the mast or discharge unit to the grounding electrode.
(F) Electrode. The grounding conductor shall be connected as follows:
(1) To the nearest accessible location on the following:
a. The building or structure grounding electrode system as covered in 250.50
b. The grounded interior metal water piping systems, within 1.52 m (5 ft) from its point of entrance to the building, as covered in 250.52
See the commentary following 250.52(A)(1).
c. The power service accessible means external to the building, as covered in 250.94
d. The metallic power service raceway
e. The service equipment enclosure, or
f. The grounding electrode conductor or the grounding electrode conductor metal enclosures; or
(2) If the building or structure served has no grounding means, as described in 810.21(F)(1), to any one of the individual electrodes described in 250.52; or
(3) If the building or structure served has no grounding means, as described in 810.21(F)(1) or (F)(2), to an effectively grounded metal structure or to any of the individual electrodes described in 250.52.
Hope this helps
Wg
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