MIL-DTL-16036M(SH)
3. Standardized switchboard units type number series.
Type number
Description of units
G1-7
AC generator
G10-11
DC generator
B20-26
AC bus tie
E40-42
Emergency switchboard
D50-56
ACB distribution
D60-64
AQB and ACB 640, 900, 902 distribution
D70-74
AQB and ACB 1600 distribution
D80-97
AQB distribution 100A or 250A
4. Circuit breaker quantities listed are typical.
5. If necessary, the depth (dimension "C") may be altered on AQB feeder units so the feeder units can have the
same main bus as required for the generator and bus tie units.
6. Diagram figure numbers refer to the side bolting pattern, floor plan, front plan, and side sheet cutout plan.
7. "B" dimension includes side sheets.
8. "A" dimension is without foundation channels.
Dimension tolerances (in inches)
Decimals
Fraction
Dim
2 PL
3 PL
Under 6
±0.01
±0.005
±1/64
6 to 18
±0.02
±0.010
±1/32
18 to 36
±0.03
±0.015
±1/16
36 to 84
±0.04
±0.020
±1/8
NOTES:
All dimensional tolerances are in accordance with table unless otherwise noted. Tolerances shall be noncumulative.
Two place tolerances for dimensions A, B, and C.
Three place tolerances for dimensions D, E, F, G, H, K, I, and M.
FIGURE 7. Standardized switchgear units Continued.
70
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