-
Appliances Can Kill... Safety First!
-
Electrical Terminology
-
Number Prefixes
-
Ohms Law
-
An overview of our safe working practices
-
What is Earth Loop Testing
-
TN-S Earth System
-
TN-C-S System
-
TT System
-
Testing a TN-S Earth System
-
Testing a TN-C-S System
-
Testing a TT System
-
How to perform an earth loop test from a hard wired appliance
-
What is Earth Continuity
-
Earth Continuity Test Sequence
-
What is Insulation Resistance?
-
Insulation Resistance Test Sequence
-
How to test Earth Continuity and Insulation resistance on a freestanding appliance.
-
How to test Earth Continuity and Insulation resistance on a hard wired appliance.
-
Safe Isolation
-
Water Regulations
Quizzes
A TN-S system, shown in the image below, has the neutral of the source of energy connected with earth at one point only, at or as near as is reasonably practicable to the source, and the consumers earthing terminal is typically connected to the metallic sheath or armor of the distributor’s service cable into the premises.
