You're correct, 4 individual slings with a shackle would have been better but given the narrow footprint and equipment height of over 8' there was little to no chance of the pulley effect you mentioned tipping the load.And you're not supposed to run slings through a hook. The hook can act as a pulley and bad things can happen even with a balanced load if one corner gets hung up.
Wow nice. I’d think there be some “training” to know what your doing there.
Here's a few various photos of our lifting set up done solely by electricians The first one is 3 chain falls used to move two scissor lifts from one floor to another. The last two are lifting a switchboard up from one level to a generator room that was only accessible by stairs. (Yes I know about the lack of fall protection)
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