standards and guidelines for communication sites - Radio And ...
standards and guidelines for communication sites - Radio And ... standards and guidelines for communication sites - Radio And ...
SPECIAL GROUNDING (EARTHING) APPLICATIONS CHAPTER 4: EXTERNAL GROUNDING (EARTHING) BOND FROM EXTERNAL GROUNDING STUD ON ACCESS POINT TO METALLIC SUPPORT ARM USING APPROPRIATE HARDWARE AP FIGURE 4-61 GROUNDING ACCESS POINT MOUNTED ON METAL POLE NOTE: If the access point or wireless router is mounted to a non-metallic arm on the metallic utility pole, the access point or wireless router shall be grounded as described above by bonding to the metallic portion of the pole as shown in Figure 4-61. 4.10.3.3.2 NON-METALLIC POLE MOUNTED BOND FROM EXTERNAL GROUNDING STUD ON ACCESS POINT TO METALLIC POLE USING APPROPRIATE HARDWARE METAL POLE, METAL ARM METAL POLE, NONMETALLIC ARM Non-metallic utility poles used for supporting access points and wireless routers shall be grounded (earthed) in the same manner as described in “Wooden Structures (Poles)” on page 4-58. The access points and wireless routers shall be bonded to the pole's vertical grounding conductor using a 16 mm 2 csa (#6 AWG) or coarser, solid or stranded, copper conductor as shown in Figure 4-62. Connection to access points and wireless routers shall be made to an adequately-sized dedicated grounding point in accordance with the device manufacturer requirements. Grounding conductors shall meet the specifications and installation requirements of “Grounding (Earthing) Conductors” on page 4-28. Bonding to the vertical grounding conductor shall be made using listed irreversible compression fittings or exothermic welding as described in “Bonding Methods” on page 4-41. 4-86 68P81089E50-B 9/1/05 AP
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES SPECIAL GROUNDING (EARTHING) APPLICATIONS BOND FROM EXTERNAL GROUNDING STUD ON ACCESS POINT TO GROUNDING ELECTRODE SYSTEM AP FIGURE 4-62 GROUNDING ACCESS POINT MOUNTED ON NON-METALLIC POLE 4.10.4 METAL SHIPPING CONTAINERS USED AS COMMUNICATIONS BUILDINGS Grounding (earthing) electrode systems for metal shipping containers used as communications buildings shall conform to the requirements specified in this chapter for a dedicated communications building (see “Dedicated Communications Building Grounding (Earthing)” on page 4-59). All equipment inside the shipping container shall conform to the grounding requirements of Chapter 5, “Internal Grounding (Earthing).” In addition to the requirements listed above, the outside of the shipping container shall be bonded to the grounding electrode system in at least all four corners using 35 mm 2 csa (#2 AWG) or coarser, bare, solid, copper conductors. Requirements for bonding the metal shipping container to the grounding electrode system are as follows: • Each corner of the metal container shall bond directly to the grounding electrode system. • Conductors shall meet the requirements of “Grounding (Earthing) Conductors” on page 4-28. • Conductor bonding to the metal shipping container shall be exothermically welded whenever practical. See “Exothermic Welding” on page 4-41. When exothermic welding is not practical, other suitable mechanical connections may be used. • Conductor bonding to the grounding electrode system shall be made using exothermic welding or listed irreversible high-compression fittings. See “Bonding to the External Grounding (Earthing) Electrode System” on page 4-40. 68P81089E50-B 9/1/05 4-87
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SPECIAL GROUNDING (EARTHING) APPLICATIONS CHAPTER 4: EXTERNAL GROUNDING (EARTHING)<br />
BOND FROM EXTERNAL<br />
GROUNDING STUD ON<br />
ACCESS POINT TO<br />
METALLIC SUPPORT ARM<br />
USING APPROPRIATE<br />
HARDWARE<br />
AP<br />
FIGURE 4-61 GROUNDING ACCESS POINT MOUNTED ON METAL POLE<br />
NOTE: If the access point or wireless router is mounted to a non-metallic arm on the metallic utility pole, the<br />
access point or wireless router shall be grounded as described above by bonding to the metallic portion<br />
of the pole as shown in Figure 4-61.<br />
4.10.3.3.2 NON-METALLIC POLE MOUNTED<br />
BOND FROM EXTERNAL<br />
GROUNDING STUD ON<br />
ACCESS POINT TO<br />
METALLIC POLE USING<br />
APPROPRIATE HARDWARE<br />
METAL POLE, METAL ARM METAL POLE, NONMETALLIC ARM<br />
Non-metallic utility poles used <strong>for</strong> supporting access points <strong>and</strong> wireless routers shall be grounded<br />
(earthed) in the same manner as described in “Wooden Structures (Poles)” on page 4-58. The access<br />
points <strong>and</strong> wireless routers shall be bonded to the pole's vertical grounding conductor using a 16 mm 2<br />
csa (#6 AWG) or coarser, solid or str<strong>and</strong>ed, copper conductor as shown in Figure 4-62. Connection to<br />
access points <strong>and</strong> wireless routers shall be made to an adequately-sized dedicated grounding point in<br />
accordance with the device manufacturer requirements. Grounding conductors shall meet the<br />
specifications <strong>and</strong> installation requirements of “Grounding (Earthing) Conductors” on page 4-28.<br />
Bonding to the vertical grounding conductor shall be made using listed irreversible compression fittings<br />
or exothermic welding as described in “Bonding Methods” on page 4-41.<br />
4-86 68P81089E50-B 9/1/05<br />
AP
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