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Interesting little document!
Excerpts...
Modern Regs: Placing out of reach.
Bare conductors.....should always be as far out of reach as possible, since the accidental falling on to...such conductors would lead to short circuiting and the consequent sudden generation of heat...
Modern Regs: Competent Person.
The greatest element of safety is therefore the employment of skilled and experienced electricians to supervise the work.
Modern Regs: Determining conductor size.
Should wires be perceptibly warmed by the ordinary current, it is an indication that they are too small for the work they have to do, and that they should be replaced by larger wires.
Modern Regs: Test & Inspect.
The difficulties that beset the electrical engineer are chiefly internal & invisible, and they can only be effectually guarded against by "testing" or probing with electric currents.
They depend chiefly upon leakage, undue resistance in the conductor and bad joints....These defects can only be detected by means of special apparatus, the currents that are either ordinarily or for the purpose of testing, passed through the circuit.
The First Edition was obviously the building blocks for all subsequent editions. Can you recognise any of these??
Every part of the circuit should be so determined, that the gauge of wire to be used is properly proportioned to the currents it will have to carry, and all junctions with a smaller conductor should be fitted with a suitable safety fuse or protector, so that no portion of the conductor should ever be allowed to attain a temperature exceeding 150ºF.
The employment of gas or water pipes as conductors ...should not in any case be allowed.
Where indoor wires are put out of sight...they should be thoroughly protected from mechanical injury.
Interesting!
To secure persons from danger...it is essential...that no one can be exposed to shocks of alternating currents of a mean EMF exceeding 100V or to continuous currents of 200V.
If the pd within any house exceeds 200V, the house should be provided with a "switch", so arranged that the supply of electricity can be at once cut off.
Excerpts...
Modern Regs: Placing out of reach.
Bare conductors.....should always be as far out of reach as possible, since the accidental falling on to...such conductors would lead to short circuiting and the consequent sudden generation of heat...
Modern Regs: Competent Person.
The greatest element of safety is therefore the employment of skilled and experienced electricians to supervise the work.
Modern Regs: Determining conductor size.
Should wires be perceptibly warmed by the ordinary current, it is an indication that they are too small for the work they have to do, and that they should be replaced by larger wires.
Modern Regs: Test & Inspect.
The difficulties that beset the electrical engineer are chiefly internal & invisible, and they can only be effectually guarded against by "testing" or probing with electric currents.
They depend chiefly upon leakage, undue resistance in the conductor and bad joints....These defects can only be detected by means of special apparatus, the currents that are either ordinarily or for the purpose of testing, passed through the circuit.
The First Edition was obviously the building blocks for all subsequent editions. Can you recognise any of these??
Every part of the circuit should be so determined, that the gauge of wire to be used is properly proportioned to the currents it will have to carry, and all junctions with a smaller conductor should be fitted with a suitable safety fuse or protector, so that no portion of the conductor should ever be allowed to attain a temperature exceeding 150ºF.
The employment of gas or water pipes as conductors ...should not in any case be allowed.
Where indoor wires are put out of sight...they should be thoroughly protected from mechanical injury.
Interesting!
To secure persons from danger...it is essential...that no one can be exposed to shocks of alternating currents of a mean EMF exceeding 100V or to continuous currents of 200V.
If the pd within any house exceeds 200V, the house should be provided with a "switch", so arranged that the supply of electricity can be at once cut off.
