Hello , I am new here and a noob when it comes to transformers, I could really use some advice. I'm not familiar with large transformers, I mostly do electric motor control, for motors under 10 hp.
Where I work , they ask me to install a combination panel as well as a 50 kva single phase, 600v/240v transformer , to replace a 17kva of the same. ( because they cooked the 17 )
Basically I need to know what size fuses do I need on the 600v disconnect to the transformer, and what wire size from the secondary side to the 100 amp combination panel do I need.
Just doing very very basic calculations from my old college text books, which i haven't opened in many years, I figured 80 amp fuses would be safe on the primary, and that the secondary is capable of 210 amps?
Is this correct?
Since the new combination panel has a 100 amp main will #3 /600v, copper wire be ok to supply the comb. panel, as well at the primary on the transformer?
Another question if I can.... if they every decided that a 100 amp combination panel was not large enough to meet their needs , and wanted to go with a 200 amp combiation panel, would #2 aluminum be safe to supply the panel?
thanks from you time
Tony
just a note, there was no combination panel with the 17 kva transformer, just a load centre ( no main or fused disconnect ), also they had 40 amp fuses on the primary... hence the cooked transformer
Where I work , they ask me to install a combination panel as well as a 50 kva single phase, 600v/240v transformer , to replace a 17kva of the same. ( because they cooked the 17 )
Basically I need to know what size fuses do I need on the 600v disconnect to the transformer, and what wire size from the secondary side to the 100 amp combination panel do I need.
Just doing very very basic calculations from my old college text books, which i haven't opened in many years, I figured 80 amp fuses would be safe on the primary, and that the secondary is capable of 210 amps?
Is this correct?
Since the new combination panel has a 100 amp main will #3 /600v, copper wire be ok to supply the comb. panel, as well at the primary on the transformer?
Another question if I can.... if they every decided that a 100 amp combination panel was not large enough to meet their needs , and wanted to go with a 200 amp combiation panel, would #2 aluminum be safe to supply the panel?
thanks from you time
Tony
just a note, there was no combination panel with the 17 kva transformer, just a load centre ( no main or fused disconnect ), also they had 40 amp fuses on the primary... hence the cooked transformer
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