Description:
Discussing electrical engineering.
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Balancing the Breaker Box
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A person at work was telling about someone that cut their electric bill approximately in half by balancing their breaker box. If I understand this correctly, the power company charges for power based on the current draw of the highest leg. If you are using 100A on L1 and 50A on L2 then you would... more »
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Nokia battery charger recall
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Recently Nokia recalls 14m battery charger due to risk of electrical shock in use. Probably, it is another scarey case following Sony battery pack explosion in notebook computers. Nowadays, every home may have more than a dozen of mains adapters/battery chargers. I searched those models and it... more »
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GFCI
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Hey, a quick question. Does a plug-in GFCI need a three-wire grounded outlet to do it's thing, or can one safely use a 3-2 adapter?
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Voltage Required for Battery Charger
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Hi, I'm trying to make a car battery charger from a microwave transformer. I removed the high voltage secondary windings and now want to add windings for the 12V secondary. I was wondering how to calculate the required voltage needed for a 25A charger? I know the voltage is typically from 13.7-14.4V maybe up to 15V.... more »
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