Any electricians

[Magnum]

Any electricians here ?

I have a customer who has some window units installed, but they keep blowing the breaker(s).

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I want to find out which breaker controls the outlets near the window units.

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He has two fuse boxes.

Outside has 6 breakers from 40 - 60 amp each.

He also has a breaker box inside with 15 -20 amp breakers.

But the inside has NO main cutoff breaker which seems strange to say the least.

Flipping the outer breakers off did NOT shut off power to those outlets.

I am writing down what each breaker goes to.

This may not be related, but two of the outside breakers are required for one of the outside AC units.

That makes no sense to me.

Any ideas appreciated.
:-)