# Assignment Problems

Discussion in 'Homework Help' started by kedez, Mar 22, 2013.

1. ### kedez Thread Starter New Member

Mar 22, 2013
1
0
Im working on a power distribution network designing assignment.
im confused and im not sure am i working on the right track

an apartment block is supplied from 120/208V three phase 4-wire supply

Apartment units
82A at 120 V at unity p.f single phase general appliances
68 A at 208 V with p.f. of 0.85-lag for single phase Heavy appliances

it is supplied by two phases and a neutral

we try to determine the current for each unit and each line

there is my work, kinda messy but i'm not sure
the current for each line, is Ia suppose to be equal to Ib with different angel or they should be different answer

and whats the actual angel for 68A

File size:
11 KB
Views:
17
2. ### WBahn Moderator

Mar 31, 2012
18,064
4,904
It seems you are assuming the general applieance are equally split between the two sides and don't have any power factor associated with them. Why?