DIVERSITECH D MISTER, Operation & Maintenance Manual

Page: 9 / 20

9
Motor Mounting
Motor must be securely fastened to a rigid, flat surface to prevent vibration and minimize noise. For secure
mounting use high-quality bolts of the largest possible diameter.
Belt-drive sheaves must be in-line. Use a straight edge to check. Do not over-tighten belts.
Direct coupled installations require a careful check of shaft and coupling alignment, shaft offset and/or angular
misalignment should be less than .002”. Shim motor base as necessary. Do not depend on a flexible coupling to
compensate for misalignment.
MOTOR 25 - 50 FEET 100 FEET 150 - 200 FEET
HP 200V 230V 460V 200V 230V 460V 200V 230V 460V
0.25 14 14(16)* 14(18)* 12 12 14(18)* 8 10 14(18)*
0.50 14 14(16)* 14(18)* 12 12 14(18)* 8 10 14(18)*
0.75 14 14(16)* 14(18)* 12 12 14(18)* 8 10 14(18)*
1.00 14 14(16)* 14(18)* 12 12 14(18)* 8 10 14(16)*
1.50 12 14 14(18)* 10 10 14(16)* 6 8 14
2.00 12 12 14(18)* 8 10 14(16)* 6 6 12
3.00 10 12 14(18)* 6 8 14 4 6 12
5.00 8 10 14(16)* 4 6 12 2 4 10
7.50 6 8 14 4 4 10 1 2 8
10 6 6 12 3 4 10 1/0 2/0 4
15 4 4 10 1 2 8 3/0 2/0 4
20 3 4 10 1/0 1 6 4/0 3/0 4
25 2 3 8 2/0 1/0 6 250kcmil 4/0 3
30 1 3 8 3/0 1/0 6 300kcmil 4/0 3
40 1/0 1 8 4/0 3/0 4 400kcmil 300kcmil 1
50 2/0 1 6 250kcmil 3/0 3 500kcmil 350kcmil 1
60 3/0 1/0 6 300kcmil 4/0 3 600kcmil 400kcmil 1/0
75 4/0 2/0 4 350kcmil 250kcmil 2 700kcmil 500kcmil 2/0
100 250kcmil 3/0 4 500kcmil 350kcmil 1 900kcmil 700kcmil 3/0
125 300kcmil 4/0 3 600kcmil 400kcmil 1/0 1250kcmil 800kcmil 4/0
150 350kcmil 250kcmil 2 700kcmil 500kcmil 2/0 1500kcmil 900kcmil 250kcmil
200 500kcmil 350kcmil 1/0 1250kcmil 800kcmil 4/0 1750kcmil 1250kcmil 350kcmil
250 600kcmil 400kcmil 2/0 1500kcmil 900kcmil 250kcmil 2000kcmil 1500kcmil 400kcmil
Table A - Minimum Wire Sizes for 3- Phase Motors
NOTE: kcmil denotes thousand circular mils. AWG sizes formerly given in MCM.
(*) Type S, SO, SJ, SJO, etc. flexible cable wire sizes. See NEC article 400 for ampacity.