Trunking is a metal duct that made of aluminum with various sizes as the table below shows.
trunking has some parts. the cable trunking,metal cover and coupling or trunking connector.
There's space factor for trunking wiring. 55% is for the space and 45% is for cable.
Trunking wiring has advantage and disadvantage.
Advantage :
- Can store more wires
- Can add more wiring in future
- Good mechanical protection
- Easy installation
- Easily get dust and dirt
- Skilled worker needed
- High cost
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