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Old 11-Aug-2014, 6:49 AM   #25
GroundUrMast
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Join Date: Oct 2010
Location: Greater Seattle Area
Posts: 4,773
Quote:
Originally Posted by William P View Post
Am I correct in assuming that an attic install won't require grounding?
The National Electrical Code (Article 810) is usually the basis of local codes in most of the US.

Quote:
810.15 Grounding. Masts and metal structures supporting
antennas shall be grounded in accordance with 810.21.
(note that no mention of indoor vs outdoor location is made)

Quote:
810.20 Antenna Discharge Units — Receiving Stations.
(A) Where Required. Each conductor of a lead-in from an
outdoor antenna shall be provided with a listed antenna
discharge unit.
Exception: Where the lead-in conductors are enclosed in a
continuous metallic shield that either is grounded with a
conductor in accordance with 810.21 or is protected by an
antenna discharge unit.
(note that only outdoor antennas are covered by this particular requirement)

So my understanding is, grounding the antenna coax may not be required in the case of an attic mounted antenna, but the NEC appears to require that the metal parts of the antenna support be, regardless of where they are located.

You may also want to be aware of your insurance companies stance on the issue... I presume you want them on your side If you have concerns re. the condo association having a draconian mind-set or attitude.

It sounds like you are already aware of the FCC's OTARD rules, http://www.fcc.gov/guides/over-air-r...n-devices-rule
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