been sifting through the archives. got a fairly good understanding i think.
couple questions.
can the primary protection be any distance from the xfmr as long as it is before the point of service for the xfmr? haven't really found any rules on this.
240.21(C)(4), outside secondary conductors. Does this include conductors buried or in concrete encased duck and still outside of any building or structure? i guess the main deal is the code is just trying to keep unprotected feeders outside of structures should something go wrong.
table 450.3(A). what if you have a step-up xfmr that goes from low voltage to over 1000V?
thanks.
couple questions.
can the primary protection be any distance from the xfmr as long as it is before the point of service for the xfmr? haven't really found any rules on this.
240.21(C)(4), outside secondary conductors. Does this include conductors buried or in concrete encased duck and still outside of any building or structure? i guess the main deal is the code is just trying to keep unprotected feeders outside of structures should something go wrong.
table 450.3(A). what if you have a step-up xfmr that goes from low voltage to over 1000V?
thanks.