Quote from: Bogart on December 14, 2014, 04:08:02 AM

Quote from: sherbyspark on December 06, 2014, 11:02:18 AM

Quote from: Zich on December 06, 2014, 09:38:49 AM

Quote from: tech180 on December 01, 2014, 04:10:55 PM

So the power company upgraded me to a 50 KVA transformer after the 25 KVA exploded. I am running 200 amps at 120v constant. Anyone know if this is safe on that size transformer? I dont want to blow another one, they will charge me a ton of money.

Distribution transformer usually had protection like circuit breaker or fuse. The one near my neighborhood use NT fuse.
So even if there is any overload, the fuse will be burn not the transformer(happen every week Cheesy

).

If the transformer is exploded, it's just weird. Either the transformer already too old or the power company forget to change the insulating oil.

I would say this too. There is always a circuit breaker or a safety mechanism in it, because the companies can't just take a loss of thousands of dollars if an overload happens.
You can also ask the company why the transformer exploded in the first place.

Mine has one of the big ceramic fuses on it. When I was looking at it closely one day I noticed that the fuse had been bypassed. I'm not sure why.

Yes, that is nt fuse. The fuse must be already burn then the engineer make "emergency" repair Roll Eyes

The fuse is expensive Cheesy

This may cause problem later since there is no protection if something happen like overload, short circuit, unbalanced load etc