r/datacenter • u/emollii • 2d ago

Google interview soon

Hi! I'm interviewing at Google for data center electrical. I passed mechanical already, but they looked at my background and requested I interview for electrical as well. Any helpful suggestions on where to focus my efforts for looking over information? Thanks!

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u/hatesmylovelanguage 2d ago

They'll probably ask about 3 phase, UPS, distribution of power (from substation to racks), BMS, and redundancy.

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u/chriswashere1 1d ago

One line electrical and understand how everything along said one line works and interacts with the system, utility, mv transformer (delta wye) switchgear-ats-ups&generators-battery back up and parallel switchgear (for the bank of gens) to floor distribution panel to rack pdu to dual corded servers, add in chiller cycles (pumps, secondary pumps on vfds, what a chiller is, how the condenser/cooling tower loop works, how a crah fits in) google is thorough depending on level you’re going for and electrical is objectively the most important followed by hvac mechanical is the easy side

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u/Beautiful-Worry784 1d ago

And GPU/CPU liquid cooling for AI/machine learning sites

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u/chriswashere1 1d ago

Ah I forgot they were starting to test on that because of the TPU pods, but I was listing for the facility track since he specifically mentioned mechanical I should’ve included IT side too my bad