Elect Installation & Maintenance Work 2, WASSCE (SC), 2019

Elect Installation & Maintenance Work 2, WASSCE (SC), 2019

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Candidate's Strength

Question 3

State four conditions to be considered when installing conduits.

1. List three parts of a sodium discharge lamp.
2. State one application of sodium lamp.
1. Sketch each of the following conduit boxes:
2. solid elbow;
3. Tee box;
4. inspection tee.
1. List four electrical accessories
  .
2. State one use of each of the accessories listed in 3(d)(i).
Outline any six contents of a typical budget.

Observation

Majority of the candidates did not attempt this questions. However, those who attempted

this question could not identify lamp as being different from filament lamp and where they are used.

The expected answers include:

Conditions to be Considered When Installing Conduits.
- study pipe runs of other services/installations/trades/gas/water.
- follow all the requirements of the client/co-workers as shown in the drawing.
- make allowance for future extensions/expansion.
- conduit run should be marked on the drawing
- Marking out the installation
- Sub-dividing the installation
- Preparation of the conduit
- Environmental condition/location of installation
1. Parts of Sodium Discharge Lamp
  - vacuum jacket.
  - jacket base.
  - capacito.
  - auto transformer.
  - electrodes
  - lamp base.
  - (Quartz) tube.
2. Application of Sodium Lamp
  - (Street/Highway/Road/stadium) Lighting.

1. Electrical Accessories.
  - Switches.
  - Sockets.
  - lamp holders.
  - ceiling roses.
  - joint boxes.
  - plugs.
  - junction boxes.
2. Use of Electrical Accessories.
- title of budget.
- duration of the budget.
- the sources of income/planned sales (volume).
- total estimated revenue.
- proposed expenditure items.
- total proposed expenditure.
- date of effective implementation.
- Proposed estimate/plan
- Cash flow