| Length |
Metric to Imperial |
Imperial to Metric |
|
mm x 0.394 = ins |
ins x 25.4 = MM |
|
m x 3.281 = feet |
feet x 0.3048 = m |
|
m x 1.094 = yards |
yards x 0.9144 = m |
|
km x 0.6214 |
miles x 1.609 = km |
| Area |
|
|
|
cm² x 0.155 = sq ins |
sq ins. X 6.452 = cm² |
|
m² x 10.76 = sq ft |
sq ft x 0.929 = m² |
|
m² x 1.196 = sq yards |
sq yards x 0.8361 = m² |
|
km² x 0.386 = sq miles |
acres x 0.4047 = hectare |
| Volume |
|
|
|
cm³ x 0.061 = cu ins |
cu ins x 16.39 = cm³ |
|
m³ x 35.32 = cu ft |
cu ftx 0.283 = m³ |
|
m³ x 1.308 = cu yards |
cu yards x 0.7645 = m³ |
|
litres x 1.76 = pints |
pints x 0.568 = litre = dm³ |
|
litres x 0.2205 = gallons |
gallons x 4.546 = litre – dm³ |
| Flow Rates |
|
|
|
| Units |
CFM |
M³/hr |
L/min |
L/Sec |
| 10 CFM |
10 |
17 |
283.3 |
4.72 |
| 10 M³/hr |
17 |
10 |
0.6 |
0.01 |
| 30 L/min |
0.35 |
0.6 |
10 |
0.17 |
| HP – Watts |
|
Inches – mm |
| 1 |
745.69W |
1/16 |
1.6mm |
| 3/4 |
559.27W |
1/8 |
3.2mm |
| 5/8 |
466.06W |
1/6 |
4.8mm |
| 1/2 |
372.85W |
1/4 |
6.4mm |
| 3/8 |
279.63W |
5/16 |
7.9mm |
| 1/8 |
248.56W |
3/8 |
9.5mm |
| 1/4 |
186.42W |
7/16 |
11.1mm |
| 1/6 |
124.28W |
1/2 |
12.7mm |
| 1/8 |
93.21W |
9/16 |
14.3mm |
| 1/16 |
46.61W |
5/8 |
15.9mm |
|
|
11/18 |
17.5mm |
|
|
3/4 |
19.1mm |
|
|
13/16 |
20.6mm |
|
|
7/8 |
22.2mm |
|
|
15/16 |
23.8mm |
Approximate Power Outputs
1PH PSC Motors
| Amps |
Watts out |
Watts in |
Poles |
| 0.50 |
35 |
110(2MF) |
4 |
| 0.65 |
50 |
145(2.5MF) |
4 |
| 0.75 |
75 |
165(2.5MF) |
4 |
| 1.00 |
100 |
180(2.5MF) |
4 |
| 1.20 |
150 |
280(2MF) |
4 |
| 1.40 |
180 |
310(2MF) |
4 |
| 1.60 |
210 |
350(2MF) |
4 |
| 2.10 |
250 |
230(2MF) |
6 |
| 3.00 |
370 |
600(2MF) |
6 |
| 3.60 |
550 |
990(2MF) |
6 |
| 5.10 |
735 |
1200(2MF) |
6 |
Shaded Pole Motors
| Amps |
Watts inc |
Stack |
| 0.20 |
32 |
13.5mm |
| 0.21 |
35 |
20mm |
| 0.23 |
38 |
21mm |
| 0.45 |
65 |
25mm |
| 0.52 |
73 |
30mm |
| 0.68 |
95 |
40mm |
| 0.87 |
210 |
45mm |
NEMA Insulated Classes
| Insulation Rating |
Max Operation Temp ⁰C & ⁰F |
| A |
105⁰C |
221⁰F |
| B |
130⁰C |
266⁰F |
| F |
155⁰C |
311⁰F |
| H |
180⁰C |
356⁰F |
Choosing the Correct Fan
In order to select the correct fan please find below recommended air changes per hour in normal conditions for the following buildings:
| Banks |
2-4 |
Launderettes |
24-40 |
| Bars/Cafes |
10-12 |
Living Rooms |
4-6 |
| Pool Games Rooms |
6-8 |
Hospitals |
5-7 |
| Classrooms |
2-4 |
Offices |
5-7 |
| Conference Rooms |
8-10 |
Restaurants |
10-15 |
| Dark Rooms/X-ray |
10-15 |
Shops/Supermarkets |
4-6 |
| Fish & Chip Shops |
25-40 |
Swimming Pools |
25-30 |
| Kitchens (domestic) |
10-15 |
Toilet/Bathrooms |
10-15 |
| Laboratories |
5-10 |
Canteen |
6-10 |
