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5.4 Solar Array Disconnect Switch in the Junction Box
CAUTION Loose
connections are a
comon cause of
failure. Pull each
connection to
confirm.
CAUTION If you
are not using a
low-water probe,
connect a small
wire between
terminals 1 and 2.
Note: Overload protection (fuses or circuit
breaker) is NOT required in the solar array
circuit.
Explanation:
1. Short circuit current from the solar array
can never reach the ampacity (maximum safe
amps capacity) of the recommended wire.
2. The PS- controller has internal overload
protection.
Disconnect Scwitch
The disconnect switch satisfies National
Electrical Code requirements for a safety
disconnect between the solar array and the
controller. During installation and mainte-
nance, switch off the disconnect switch to
prevent shock and arc burn hazard.
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