Answer / vijay chander

yes, interlocking in automatic and manual is possible. it
can be interlocked in motor control center.

How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

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how we decide the require size is this for a known current at fuu load?

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Does the total power means fundamental plus Harmonics?

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RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//

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what is the differnce between high impedance relay and low impedance relay

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How do apply electrical 'c'license......pls advice

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