Sparky38
Member
- Location
- Plant City
- Occupation
- Electrical Inspector
Contractor has a 320 meter feeding into a 400 amp transfer switch with 400 amp main breaker double tapped parallel 4/0 al se cables off of load side of breaker and runs 25’ to two 200 amp panels with main breakers. Would I be wrong if I said that This is in violation of 240.21 (B2,2) Where it specifically states “The tap conductors terminate in a single circuit breaker or a single set of fuses that limit the load to the ampacity of the tap conductors” 4/0 is rated for 180 amp @ 75 deg, An OCPD is not permitted to be supplied by a tap conductor having an ampacity less than its rating, I don’t believe that the 83 percent rule would apply here what do you guys think? Also they ran SE Cable through the wall and attic without the use of a raceway which would be another violation of 240.21(B2,3) Correct?