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SECTION 100 GENERAL INSTALLATION
110 | Installation | Site Requirements | 120.2 Grounding Requirements |
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110.1Physical Environment of Equipment
The following conditions should be met at the site chosen for mounting the central equipment (Key Service unit>.
1.The KSU should normally be
2.The KSU should not be located directly beneath pipes due to the possibility of leaks or condensation causing damage.
3.The area in which the KSU is located must be free of: corrosive or inflamable gases, excessive chemical or in- dustrial dusts, and other materials which could cause hazard to personnel or to the proper functioning of the equipment.
4.Heat and humidity must be within the limits found in
Section 140 “Specifications” in this manual.
5.Although its virtually noiseless operation allows a wide choice of installation sites, care should be taken that the KSU not present a hazard to office traffic. For purposed of economy a central location (to minimize cabling) is often preferable.
The KSU must be
1.Provide a suitable waterpipe ground in accordance with the local operating (telephone) company procedures.
2.If no waterpipe is available, a ground rod should be installed in accordance with local operating company procedures.
3.In the case where a ground other than conduit ground is used a grounding terminal is provided on the
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720 Electrical and Ground Requirements
120.1AC Power Requirements
1.They system should have a dedicated 117V AC outlet
separately fused for 15 AMPS. | Fig. |
2.The AC outlet should be a standard 12SV
3.The AC power must be within the limits found in Sec- tion 140 “Secifications” in this manual.
4.If the AC outlet is subject to power surges, it is re- commended that the best locally available AC surge protection be installed.
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