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4-5
Open-circuit problems such as broken, disconnected wires and/or connections stop current
fl
ow. After you
fi
x an open
circuit, switch the circuit on again and check for lingering voltage drop. Until you get current
fl
owing and check the circuit
again, you can’t know if the entire circuit is healthy.
Although resistance-free connections, wires and cables would be ideal, most of them will contain at least some voltage
drop.
MAXIMUM LIMITS
•
0.00V across a connection
•
0.20V across a wire or cable
•
0.30V across a switch
•
0.10V at a ground
