15
Appendix B: MSM Current draw, Heat loss, and Case size
*BTU/Hr assumes 85% efficiency at 100% load
MSM Model
Number
DC
Output
AC input Current
Draw @ 100% Load
Watts
In
Watts
Out
Watts
Lost
BTU/Hr*
Case
No.
Weight
(Lbs)
Amps
120
Vac
240
Vac
Fuse
Size
12
V
o
lt
S
yst
em
s
10-12V
10
1.5
0.8
15.0
153.2
130.2
23.0
79
201
5
20-12V
20
3.1
1.6
15.0
306.4
260.4
46.0
157
201
5
30-12V
30
4.6
2.4
15.0
459.5
390.6
68.9
236
203
11
40-12V
40
6.0
3.2
15.0
612.7
520.8
91.9
314
203
11
60-12V
60
9.2
4.8
15.0
919.1
781.2
137.9
471
205
18
80-12V
80
12.0
6.4
20.0
1225.4
1041.6
183.8
628
205
18
24 V
o
lt
S
y
st
em
s
10-24V
10
2.6
1.4
15.0
306.4
260.4
46.0
157
201
5
20-24V
20
5.2
2.7
15.0
612.7
520.8
91.9
314
203
11
25-24V
25
6.5
3.1
15.0
765.9
651.0
114.9
393
203
11
30-24V
30
7.8
3.8
15.0
919.1
781.2
137.9
471
203
11
35-24V
35
9.1
4.4
15.0
1072.2
911.4
160.8
550
203
11
50-24V
50
13.0
6.3
20.0
1531.8
1302.0
229.8
785
205
18
65-24V
65
16.9
8.2
20.0
1991.3
1692.6
298.7
1020
205
18
