YELLOW BELT · 2/8
Yellow Belt
Voltage, current and circuit thinking; how modules actually behave; and matching an AC service without claiming compatibility you can't verify.
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Units and service compatibility
A fictional DC circuit operates at 400 V and 8 A for two hours at constant conditions. Calculate W, kW and kWh. A different client has a 480 V three-phase service and wants Powerwall whole-building backup. Explain why the arithmetic exercise does not establish product compatibility.
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Threshold 80% · every safety-critical item must be correct · self-paced · three attempts per day.
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