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General Installation
Conduit Layout/Installation Specifications
Internationally and domestically: All wiring is to be installed and used in accordance with all
1
applicable national, state, and local building/fire/electrical codes. Additionally, in the USA,
installations must comply with the National Electrical Code (NFPA 70), NFPA 30, and the
Automotive and Marine Service Station Code (NFPA 30A) codes and regulations. Canadian
installations must comply with the Canadian Electrical Code.
All peripheral equipment connected to the RS-232 ports must be Listed, have an Electronics
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Industrial Association (EIA) standard RS-232 communications protocol and not be installed
over a hazardous location.
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Power for the data terminal and external modem must come from a separate circuit breaker
rated at no less than 10 amps.
All conduit must be metal to provide the necessary shielding.
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Use the Conduit Size chart to determine the proper conduit size.
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RS-232 communication must not exceed 100 feet. RS-232 communication wires must be in a
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separate metal conduit from any AC wires.
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For communication distances exceeding 100 feet, you must use a Gasboy RS-422 Short Haul
Modem.
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It is recommended that high voltage AC power wires be installed in separate conduit from the
low voltage DC signal wires. However, if AC and DC wires share conduit, communication
wiring must use the cable specified in
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DC RS-422 communication wires can be combined in the same conduit.
When using the master/satellite configuration, the maximum field wiring cable length between
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the first and last unit is not to exceed 1500 feet (455m). It is recommended that high voltage
AC wires be installed in separate conduit from the low voltage DC signal wires; however, if
AC and DC wires share conduit, communication wiring must use the cable specified in
"Communication Requirements" on page
Page 10
"RS-422 - Short Haul Modems" on page
17.
MDE-4319A TopKAT Fuel Managment System Installation Manual · November 2005
Conduit Layout/Installation Specifications
20.
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