Appendix A-1TP-5660 11/98
Appendix A. Glossary of Abbreviations
Abbreviations are used throughout this manual. Normally in the text they will appear in complete form with the
abbreviation following in parenthesis the first time they are used. After that they will appear in the abbreviated form.
The commonly used abbreviations are shown below.
AC alternating current
AISI American Iron and Steel Institute
Amp ampere
Amps amperes
ANSI American National Standard
Institute
API American Petroleum Institute
approx. approximate, approximately
A/R as required, as requested
A/S as supplied, as stated,
as suggested
ASA American Standards Association
ASME American Society of Mechanical
Engineers
assy. assembly
ASTM American Society for Testing
Materials
ATDC after top dead center
aux. auxiliary
AWG American Wire Gauge
AWM appliance wiring material
BBDC before bottom dead center
BDC before dead center
BHP brake horsepower
bmep brake mean effective pressure
Btu British thermal unit
°C Celsius degree
cc cubic centimeter
CCA cold cranking Amps.
CEC Canadian Electrical Code
cfh cubic feet per hour
cfm cubic feet per minute
CID cubic inch displacement
cm centimeter, centimeters
cmm cubic meters per minute
co. company
cont’d. continued
CSA Canadian Standards Association
CT current transformer
cu. in. cubic inch, cubic inches
cyl. cylinder
dB decibel
dBA decibels (A weighted)
DC direct current
DCR direct current resistance
deg. degree
dept. department
dia. diameter
e.g. example given
EIA Electronic Industries Association
EMI electromagnetic interference
EPA Environmental Protection
Agency
etc. et cetera (and so forth)
ext. external
°F Fahrenheit degree
fl. oz. fluid ounce, fluid ounces
FM frequency modulation
ft. foot, feet
ft. lbs. foot pound, foot pounds
ga. gauge (meters, wire size)
gal./ gals.gallon, gallons
gph gallons per hour
gpm gallons per minute
gr. grade
gnd. ground
HCHT high cylinder head temperature
HET high exhaust (or engine)
temperature
Hg mercury (element)
H
2
O water
HP horsepower
hr, hrs hour
Hz hertz (cycles per second)
ID inside diameter
IEEE Institute of Electrical and
Electronic Engineers
in. inch(es)
inc. incorporated
in. lbs. inch pounds
int. internal
int.-ext. internal-external
ISO International Standards
Organization
J joule, joules
JIS Japanese Industry Standard
kg kilogram, kilograms
kg/cm
2
kilograms per square centimeter
kgm kilogram meter(s)
kJ kilojoules (btu cal)
km kilometer, kilometers
kPa kiloPascal, kiloPascals
kph kilometers per hour
kV kilovolt
kVA kilovolt amperes
kW kilowatt, kilowatts
kWH kilowatt hour
L liter, liters
LxWxH length x width x height
LED(s) light emitting diode
lb., lbs. pound, pounds
L/hr. liter per hour, liters per hour
L/min. liter(s) per minutes
LOP low oil pressure
LP liquefied petroleum
m meter, meters
m
3
cubic meter, cubic meters
max. maximum
MCM one thousand circular mils.
meggar megohmmeter
MHz megahertz
mi. mile, miles
mil one one-thousandth of an inch
min. minimum
mJ millijoule, millijoules
MJ mega joule, mega joules
mm millimeter, millimeters
m
3
/min cubic meters per minute
MPa megaPascal
mW milliwatt, milliwatts
MW megawatt, megawatts
N/A not available or not applicable
NBS National Bureau of Standards
N.C. normally closed
NEC National Electrical Code
NEMA National Electrical
Manufacturers Association
NFPA National Fire Protection
Association
Nm Newton meter, Newton meters
no., nos number, numbers
NPT National Standard taper pipe
thread per general use
N/R not required
OC overcrank
OD outside diameter
OEM original equipment manufacturer
OS overspeed, oversize
O/S oversize
OSHA Occupational Safety and Health
Act
OV overvoltage
oz. ounce, ounces
PF power factor
PMG permanent magnet generator
pot. potentiometer
ppm parts per million
psi pounds per square inch
pt., pts. pint, pints
PVC polyvinyl chloride
qt., qts. quart, quarts
qty. quantity
ref. reference
RFI radio frequency interference
r.h.m. round-head machine (screw)
rms root mean square
RPM revolutions per minute
RTV room temperature vulcanization
SAE Society of Automotive Engineers
SCR silicon-controlled rectifier
sec. second, seconds
spec. specs, specification
sq. square
sq. cm square centimeters
sq. in. square inch, square inches
tach tachometer
TDC top dead center
tech. pub.technical publications
temp. temperature
TIF telephone influence factor
TP, TPs technical publications
turbo turbocharger
UHF ultrahigh frequency
UNC Unified coarse thread (was NC)
UNF Unified fine thread (was NF)
UL Underwriter’s Laboratories, Inc.
U/S undersize
U.S.A. United States of America
V volt, volts
vac volts alternating current
vdc volts direct current
VHF very high frequency
W watt, watts