Cayman 2006 General Information — Section 1 • 7
GLOSSARY OF TERMS
AC Electricity - Alternating current also known as household power.
Air Compressor - Pumps air to and builds air pressure in an air system.
Air Dryer - Cools, fi lters and dries the air delivered by an air compressor.
Air Governor - Controls the operation of the air compressor by constantly monitoring air pressure
in the supply tank of the air system. The air governor initiates the unload cycle when the cut-out
pressure is reached.
Alternating Current (AC) - A current that varies periodically in magnitude and direction. A battery
does not deliver alternating current. Also referred to as shore power, utility power, inverter
power, generator power, etc.
Ampere (Amp) - The unit of measure of electron fl ow rate of current through a circuit.
Ampere-hour (Amp-hr. AH) - A unit of measure for a battery electrical storage capacity, obtained
by multiplying the current in amperes by the time in hours of discharge. Example: A battery
which delivers 5 amperes for 20 hours, delivers 5 amperes times 20 hours, or 100 Amp-Hr. of
capacity.
ANSI - American National Standards Institute.
ASTM - American Society for Testing and Materials.
Black Water - Term associated with the sewage holding tank. The toilet drains directly into this
tank.
CCA - Cold Cranking Amperage is the amount of current a battery can deliver for 30 seconds at 0° F
without dropping below a specifi ed voltage, usually 10.5 Volts DC.
Chassis Battery - Powers chassis 12 Volt accessories and starts engine.
Circuit - An electric circuit is the path of an electric current. A closed circuit has a complete path. An
open circuit has a broken or disconnected path.
City Water - A term associated with the water supply that you hook-up to at campgrounds. It is
called city water because water is pulled from a central source (like in a city) and not the fresh
water tank.
Compressor Load Cycle - The time during which the compressor is building pressure in the
air system.
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