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Electrical Accessories

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Rural Technology

An electrical domestic accessories is a basic part used in wiring either for protection & adjustment or for the control of the electrical ciruits or for a combination of these functions.

Rating of accessories-

The standard current ratings of the accessories are 6, 16 & 32 ampere. The voltage rating is 240V AC as per B.I.S 1293-1988. Construction of accessories- These accessories should be provided with complete enclosures, which shall afford adequate protection against accidental contact with all live parts. The parts & the materials normally used are as shown in Table 1

PART...................................................MATERIALS


1. Base..........................................Vitrifide, Ceramic material or Nonignitable,mouded, insulating material.e.g. Bakelite.


2. Covers, coverplate & actuating ..............Tough non-ignitable insulating materials.
3. member ( knob)...............................Bakelite (knob may be insulated from the live parts)
4. Springs...................................... Corrosion- resistance metal.
5. Terminals....................................Plated brass terminal posts & screws.
6. Attachment...................................Mild steel , alumininium alloy or insulating fitting screws & other noncurrent material.


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