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MPC-6000 / MPC-7000 / RND-2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
APPENDIX-A: REFERENCE DATA
This appendix provides reference for the following topics:
• Wire selection guides
• Battery size calculations
WIRE SELECTION GUIDES
Resistance of Solid Copper Wire
AWG Ohms per Thousand Feet*
18 8.08
16 5.08
14 3.19
12 2.01
*NEC Chapter 9, Table 8.
Notification Appliance Circuit Wire Selection Guide
The following chart is based on the following premises:
• V=IR
• The entire load is at the end of the wire run (worst case).
• Resistance is of solid copper wire.
Contact your local distributor or the factory if further information is needed in your circumstances.
Maximum Wire Loop Distance (Feet)
Signal Load (A) 18 AWG 16 AWG 14 AWG 12 AWG
1237 1968 3134 4975
0.10
0.25
0.50
0.75
1.00
1.25
1.50
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