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ELECTRIC WIRE SIZE
MOTOR HP SINGLE PH. THREE PH. 115 230 230 460 VOLT VOLT VOLT VOLT
1/3 1/2 3/4
1
1-1/2 2 3 5
7-1/2 10
14 14 12
12 10
14 14 14
14 14 12
12
14 14
14 14 14
14 12
10 8
14 14
14 14 14
14 14
14 12
From Standards of the National Board of Fire Underwriters.
ELECTRICAL UNITS Source: United States Bureau of Standards
The watt is the unit expressing electrical power as horsepower (hp) in mechanics; it is equal to the product of the volts (pressure) times amperes (rate of flow). Thus, 2 volts times 2 amperes would give in a direct current circuit 4 watts. Electrical energy is sold at so much per watt hour or more generally at a given amount per kilo-watt hour - which means 1,000 watt hours. This may represent 1 watt for 1,000 hours or 1,000 watts for 1 hour. 746 watts are equal to one horsepower or inversely 1 kilowatt
(kw) is equal to about 1-1/3 horsepower.
The horsepower represents the power required to life a weight of 33,000 lbs. 1 foot in 1 minute or 550 lbs. 1 foot in 1 second.
The ohm is the unit of electrical resistance and rep- resents the physical property of a conductor which offers a resistance to the flow of electricity, permit- ting just 1 ampere to flow at 1 volt of pressure.
CAPACITIES OF CYLINDRICAL TANKS
DIAMETER INCHES 12” 15” 18” 24” 27” 30” 33” 36” 42” 48” 54” 60” 66” 72” 84” 95”
108” 120” 144”
GALS. PER IN. LENGTH .49 .76
1.10 1.95 2.47 3.06 3.70 4.40 5.99 7.83 9.91
12.24 14.81 17.63 23.99 91.33 39.66 48.96 70.55
GALS. PER FT. LENGTH 5.88 9.18
13.22 23.50 29.74 36.70 44.43 52.88 71.97 94.00
118.97 146.88 177.72 211.51 287.88 376.01 475.89 587.52 846.00
FORMULA FOR FIGURING CAPACITY IN GALLONS - ROUND TANKS
Multiply square of the diameter in inches by .7854. Multiply the result by length in inches, which will give you volume of tank in inches. Since there are 231 cubic inches in one gallon you divide the inch volume by 231. The answer is capacity in gal- lons.
APPROX. BTU, GRAVITY & WEIGHT OF FUEL OIL
AVERAGE BTU’s SPECIFIC LBS.
FUEL NO. PER GAL. GRAVITY PER GAL. 1
2 4 5 6
135,800 139,400 145,000 148,100 151,300
38-42 32-36 24-26 18-22 14-46
6.8 7.2 7.5 7.7 7.9
TEMP. R134a R-12 R-401A R-409A R-22 R-410A -50 -45 -40 -35 -30 -25 -20 -15 -10 - 5 0 5
18.4 16.2 14.5 11.8 9.7 6.2 3.6 0.3 1.9 4.5 6.5 8.5
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
100 105 110 115 120 125 130 135 140 145 150
12.0 14.4 18.4 21.4 26.1 29.5 35.1 39.1 45.5 50.1 57.5 62.7 71.2 77.2 86.8 93.6
104.4
VAPOR PRESSURE, PSIG 15.4
13.3 11.0 8.4 5.5 2.3 0.6 2.4 4.5 6.7 9.2
11.8 14.6 17.7 21.0 24.6 28.5 32.6 37.0 41.7 46.7 52.0 57.7 63.8 70.2 77.0
18.5 16.0
--- ---
14.5 12.9 11.5 10.0 9.0 6.0 3.5 0.4 2.2 4.8 6.7 8.8
12.2 12.5 14.6 14.8 18.6 18.7 21.5 21.5 26.2 26.0 29.6 29.2 35.0 34.5 39.0 38.2 45.3 44.3 62.0 66.2
7.9 4.4 1.9 1.2 2.8 5.3 7.2 9.2
6.1 2.7 0.5 2.5 4.8 7.3
10.1 13.1 16.4 20.0 23.9 28.1 32.7 37.7 43.0 48.7 54.8 61.4 68.5 76.0 84.0 92.5
70.0 74.5 101.6 76.0 80.3 111.2 85.0 89.5 121.4 92.0 96.0 132.2
84.2 102.0 106.4 143.6 91.8 109.0 113.7 155.6 99.8 121.0 125.1 168.4
112.1 108.3 129.0 133.2 181.8 136.4 165.0
198.9 181.0 219.0 222.3 296.8 210.7 229.4
193.5 206.5
234.6
202.0 231.0
242.4 220.3 263.0 265.9 358.8 263.0
250.0 283.0
286.4 381.5 Bold figures indicate inches hg. below 1 ATM. 275 GALLON
44" x 27" x 60" HORIZONTAL
INCHES GALLONS 2 4 6 8
10 12 14 16 18 20 22 24 26
14 32 51 73 96
118 146 169 191 213 235 253 275
275 GALLON
44" x 27" x 60" VERTICAL
INCHES GALLONS 2 4 6 8
5
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44
14 25 37 50 65 79 93
107 122 136 150 164 178 193 207 221 234 246 258 268 275
285 GALLON 38" x 60"
INCHES GALLONS 1
3
26 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 27 28 29 30 31 32 33 34 35 36 37 38
11 17 23 30 37 45 53 62 71 80 89 99
108 118 128 137 147 157 167 177 186 196 206 224 233 241 249 257 265 272 278 284 289 292 295
550 GALLON 48" x 72"
INCHES GALLONS
13 28 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
15 22 31 41 51 62 73 85 97
110 123 137 151 165 179 193 208 222 237 252 267 282 297 312 327 342 356 371 385 399 413 427 441 454 467 479 491 502 513 523 533 542 549 556 561 564
1000 GALLON 48" x 128"
INCHES GALLONS 1
5
2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
14 26 40 55 72 91
110 130 151 173 196 219 243 267 292 317 343 369 395 421 447 474 501 528 555 581 607 633 659 685 710 735 759 783 806 829 851 872 892 911 930 947 962 976 988 997
1002
205.2 234.2
252.9
277.9 316.5
337.2 169.0 226.3
156.1 146.8 175.0 178.8 242.7 171.3 182.0
157.7 191.0 194.3 259.9 169.1
5.8 9.2
11.7 15.9 18.9 23.9 27.5 33.5 37.8 44.8 49.8 55.2 63.9 70.2 80.2 87.4 99.0
107.3 120.5 129.9 144.9 155.6 172.5 184.5 203.6 217.1 238.4 253.5 277.3 294.0
124.3 117.2 142.0 146.0 195.9 311.4 132.9 126.6 151.0 154.9 210.7 146.5
329.6 368.2 388.7 420.9 443.5 478.9 503.7 542.5 569.6 612.1