Maybe not but there are stories (true of false) about a short on the POCO side that took out the local transformer. I can see that this did arc long enough to destroy the riser. And that probably didn't take long. So all that heat may have very well reached the buses in the panel? We won't know until the OP reports back. Looks like definitely not a DIY job although I would do it. I was in my panel just before I sat down here. Jumping back to Frontier fiber and they need 120v near the box location. I had removed it when I installed a transfer switch. Not much more room in that cabinet. (old house and they built cabinets for the power back then — I like them).
I saw a neighbor's mast fail like this. Arcing in the pipe created enough heat to ignite their vinyl siding. The power company disconnected them at the pole. That was a much bigger mess. Anyway, pole transformers aren't as well protected as most would expect, and I've seen them pop from overloading many times. A smoldering arc could conceivably consume enough power to do that, but it did not in my neighbor's case.
On a different occasion, the transformer across the street from me actually exploded when overloaded, blowing off the cover and spilling a fireball of burning oil all over the street. That made for a heck of a show.
There is no protection on the secondary of PoCo transformers.
That depends on your PoCo. I know for a fact that the transformer supplying my house has a secondary circuit breaker that has tripped many times. On my block, tree branches and wind have a history of slapping the old open copper wires between the poles, shorting the phases to a neutral tripping the secondary breaker, leaving me without power for up to a day each time until someone could reset it with a hot stick.
Look in Features - Optional Product Accessories here:
Single PHASE Ratings & KVA Ratings are available in 1/2 through 250 kVA with primary voltages 2.4 kV through 34.5 kV (150 kV BIL) and secondary voltages up to 600 volts.Step down transformer r…
ermco-eci.com
In this stock photo, you can see the circuit breaker is the lever with the ring end all the way on the left. Between it and the neutral is its indicator lamp.
