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Find the row in the table below that matches your choice in step 1. In that row is the maximum number of loads for each cabinet size.
Choose a cabinet size, and do not exceed the maximums when designing the panel. See page 18 for more information on the cabinet
sizes.
Max # of Modules
MLO
MCB
FT
* If using 120/208V and MCB125, reduce the maximum number of loads shown by three.
Now choose quantities of DIM, FLV, and HSW modules, but do not exceed the maximum number of modules and maximum number of
loads determined from the table above.
As an example, say you have 4 DIM loads, 20 FLV loads, and 15 HSW loads. This would require 1 DIM module, 3 FLV modules, and 2
HSW modules = 6 modules. Using the formula on the previous page, these six modules wire a total of 46 loads.
The cabinet size will be 2x4 because it is the smallest cabinet that can accommodate 6 modules and 46 circuits.
Note: It is possible to wire in fractions of modules when there are not enough breakers available for the modules you want. In this
circumstance please call Crestron Sales Support Services.
Note: For feed-thru cabinets only (-FT), the model name is complete after step two. Skip steps three and four.
3. Voltage
To specify the circuit breaker voltage, enter "120" for 120/208V or "277" for 277/480V.
4. AIC Rating
Choose one of the following values from the appropriate column to specify the Ampere Interrupting Capacity of the circuit breakers.
When a short circuit occurs, a large amount of current flows into the circuit breaker and it trips. The
Ampere Interrupt Capacity rating is the maximum current the breaker can safely interrupt. If the short
circuit current exceeds the AIC rating of the breaker, the circuit breaker may fail. For safe operation,
the AIC rating must exceed the available fault current at the panel.
Crestron Commercial Lighting Design Guide
2x2
3x2
4
6
30
42
27*
39*
-
-
(1 × 6) + (3 × 8) + (2 × 8) = 46 loads
120 Volt
10K
22K
65K
What is AIC?
Cabinet Size
2x4
3x4
8
12
60
60
57*
57*
-
-
GLPD-C-___-___-___-___-___-___
GLPD-C-___-___-___-___-___-___
277 Volt
18K
35K
65K
14
2x2-FT
3x2-FT
4
6
-
-
-
-
32
48
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