I was wondering if anyone could provide some insight on when/where to specify a distribution step-down transformers with "low sound level requirements". See MasterSpec - 262200-2.3(P). For example, should one specify the low sound level requirements for a transformer in an elementary school ? Say if the transformer is 200kVA, not adjacent to a classroom, and in its own electrical room?
Also, I was wanting some insight into the insulation class as well. In what situations would I specify something better than 150 deg. C rise above 40 deg. C (see MasterSpec - 262200-2.3(J)). Thanks for any help.
Also, I was wanting some insight into the insulation class as well. In what situations would I specify something better than 150 deg. C rise above 40 deg. C (see MasterSpec - 262200-2.3(J)). Thanks for any help.