Crestron electronic Green Light GLPS-HSW-FT - Manual (Page 28)

Crestron Commercial Lighting Design Guide
24
Power Switching
Find the row in the table 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 28 for more information on the cabinet sizes.
Cabinets
Medium Large Extra Large
Max Combined Size
(see page 28)
8 MU 8 MU 11 MU
Maxim
u
m #
of Loads
MLO 30 42 42
MCB 27* 39* 39*
*If using 120/208V and 125A MCB, reduce the maximum number of loads shown by three.
Now choose quantities of SW10, SW16, HSW8, HSW12, and FLV8 modules, but do not exceed the maximum combined size (in MUs)
and maximum number of loads just determined.
Example:
1 SW10, 1 SW16, 2 FLV8
Combined Size = ( 1 × 2 MU) + ( 1 × 3 MU) + ( 2 × 3 MU) = 11 MU
# of loads = ( 1 Ч 10) + ( 1 Ч 16) + ( 2 Ч 8) = 42
The cabinet will need to be Extra Large because it fits 11 MU and 42 loads. This will only work with the MLO feed type.
3. Voltage
GLPS-C-___-___-___-___-___-___-___-___
To specify the circuit breaker voltage, enter “ 120 ” for 120/208V or “ 277 ” for 277/480V.
4. AIC Rating
GLPS-C-___-___-___-___-___-___-___-___
Choose one of the following values from the appropriate column to specify the Ampere Interrupting Capacity of the circuit breakers.
120 Volt 277 Volt
10K 18K
22K 35K
65K 65K
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.
What is AIC?
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.