2391 exam question

[john h owen]

Items related to the steel containment system (conduit/trunking) (not the wiring) must be checked during the inspection of the installation.State FIVE items that must be checked,and explain what each check would involve

 

[malcolmsanford]

Number of Besa or pull boxes...................enough available
Spacing of saddles.................................Too ensure that containment is supported
Security of fixing of saddles and besa boxes...... Too ensure contaiment is securely fixed
Tighness of bushes in boxes...............For continuity and mechanical erection sound
Check continuity if containment is used as a CPC...............continuity of protective conductor.

Also inner radius of bends should be not less than 2.5 times the outside diameter

 

[bobby101]

basically common sense

 

[tomxhug]

Items related to the steel containment system (conduit/trunking) (not the wiring) must be checked during the inspection of the installation.State FIVE items that must be checked,and explain what each check would involve

Have a look at GN3 page 30 This should be what the exam questions are based on.