volt drop

blue eyes · May 9, 2011

hi

i have a long cablrun of 500m for a entry gate which possible will have a worm drive so current usage will be low.my question is i have to supply a 13A socket for remote working ect,this socket as not being used constantly should i calculate VD on the 13A which will be used 1 a year are on average of 7ish amps.

also is there any tip on calculating such a circuit as the load will be used on average once an hour.should i calculate VD for the full load even if it is not constant.

cheers blue eyes

Liamsparks · May 9, 2011

ide personally base it on 13A possibly slightly higher (16A) incase you wish to add things onto it at a later date (lights)

500M is hell of a long way, obviously there isnt anything closer you could use?

blue eyes · May 9, 2011

500M is hell of a long way said:
no the nearest place is 500m away the cable is so far looking a large one and was hoping that i could ignore the 13A that will be used once a year ,but i can see that when the load is in use there needs to be no volt drop