common electrical accessories

Identify the accessory shown

• bayonet cap lampholder

• ceiling rose

• Edison lampholder

• shrouded lampholder

The picture shows an Edison screw lampholder. The centre terminal should be connected to

• earth

• CPC

• neutral

• Live

The accessory shown is a

• ceiling rose

• plug

• box

• socket

Identify the unsafe practice in the installation

• switch should not be in neutral

• fuse should not be in phase conductor

• neutral link is to be removed

• MCB to replace fuse

The accessory shown is a

• 2 way switch

• 3 way switch

• 3 terminal switch

• intermediate switch

Edison screw lampholder with the designation E27 can handle power rating up to

• 200 W

• 300 W

• 400 W

• 500 W

Bayonet cap lamp holder needs to comply with SS125 and have a

temperature rating of T2 which is not exceeding

• 210 ⁰C

• 300 ⁰C

• 350 ⁰C

• 380 ⁰C

An Edison screw lampholder has a designation E14. The number 14 refers to

• outer diameter of screw thread

• outer radius of screw thread

• circumference of screw thread

• pitch of screw thread

Ceiling rose shall not be installed in installation where the voltage exceed

• 250 V

• 300 V

• 350 V

• 400 V

The plug shown is commonly used for heater, air con , cloth dryer etc. and is rated at

• 13 A

• 15 A

• 25 A

• 32 A