Description of test
Performing this test is to ensure that there is continuity throughout the circuit, that there are no breakages and conductors have been connected correctly. Be sure you have isolated the supply before beginning the test.
Methods
Test method 1 : Short lead Test
Test method 2 : Long lead Test
Test Equipment
Low Ohm Resistance […]
Having a Consumer Unit with an rcd as a main switch and just mcbs, not on a split board contravenes the regulations in the 17th edtion under reg, 314.1 (see also 314.2)
An Rcd as a main switch when tripped due to the failure of a circuit or due to nuisance tripping will affect all other […]
Hello, just a little information about Steel Armoured Cable (SWA)
Steel Armoured Cable is protected by a sheath of galvanised steel. This makes it suitable for direct burial, cable ducting or it can be surfaced mounted without any further protection. It can be used for indoors and outdoors.
Steel Armoured Cable (SWA) Cores Colours
2 core = […]
First Number
Meaning
Second Number
Meaning
Refers to protection against solids
Refers to protection against liquids
0
No protection
0
No protection
1
Protected against solid objects over 50mm (e.g. accidental touch by the hand)
1
Protected against water falling vertically
2
Protected against solid objects over 12mm (e.g. accidental touch by the finger)
2
Protected against direct sprays from up to 15 degrees from vertical
3
Protected against solid objects over 2.5mm […]
This is going to explain how to deal with 1 way switching
Here we’ll explain how to do 2 way lighting
o———o 0—————-0
0—————————o
The diagram shows single colours only. In real life these wires would be covered by an outer protective sheath and would include a bare earth wire and would be called a cable.
Red sleeving or tape would of been placed on the wires as shown to show […]