Slim shady
Member
hi all
i'm having trouble calculating the maximum permissable current of parallel 240mm sq2 copper mains running a distance of 3 metres.
i have been given a high voltage 11kv to 400 volt transformer three phase to commission which is rated for 1000KVA which is rated for roughly 1400 amps
gut feeling says these 240s are too small and i will need to increase this size to be compliant with the name plate rating of 1400 amps
but with out proof of this being the case i really dont have a leg to stand on and will look like a whinning moaner that is either a.. costing the company money for over thinking the size of mains or B. doing the company a favour and getting it right.
can anyone talk me through the process of why the 240 copper parrallels are undersized??
regards steven
i'm having trouble calculating the maximum permissable current of parallel 240mm sq2 copper mains running a distance of 3 metres.
i have been given a high voltage 11kv to 400 volt transformer three phase to commission which is rated for 1000KVA which is rated for roughly 1400 amps
gut feeling says these 240s are too small and i will need to increase this size to be compliant with the name plate rating of 1400 amps
but with out proof of this being the case i really dont have a leg to stand on and will look like a whinning moaner that is either a.. costing the company money for over thinking the size of mains or B. doing the company a favour and getting it right.
can anyone talk me through the process of why the 240 copper parrallels are undersized??
regards steven