Level 3 C&G cable sizing calculations
Level 3 C&G cable sizing calculations
Just started Level 3 C&G and we're doing cable sizing calcs. Using a previous years exam question.
We ran through a few examples of radial circuits, all well and good. Following this proceedure:
Work out total load on circuit from plan.
Work out design current. Ib.
Ib<In<It
Find suitable breaker that's bigger than the Ib.
Now find It, tabluated current, by using cable factors Ca, Ci, Cf and Cg.
Once we have It, look up the size of cable for the given reference...
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by richardindorset
This has been automatically posted in the DIYNot Forum on DIY Talk. The new DIY Forum
Level 3 C&G cable sizing calculations
Just started Level 3 C&G and we're doing cable sizing calcs. Using a previous years exam question.
We ran through a few examples of radial circuits, all well and good. Following this proceedure:
Work out total load on circuit from plan.
Work out design current. Ib.
Ib<In<It
Find suitable breaker that's bigger than the Ib.
Now find It, tabluated current, by using cable factors Ca, Ci, Cf and Cg.
Once we have It, look up the size of cable for the given reference...
Read more
by richardindorset
This has been automatically posted in the DIYNot Forum on DIY Talk. The new DIY Forum