What does a PAT Test actually check for?
A Portable Appliance Test (PAT Test) consists of two parts a visual check and a electrical test.
Every item will received the checks below if applicable
Visual Test
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Cracks or sign or burning
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Chemical damage
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Corrosion
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Appliance obstruction (Stop overheating)
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Correct fuse rating
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Check Item isn't in in the wrong position or environment
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Check for obvious signs of overheating
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Ensure the casing around the appliance is fastened correctly
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Check the appliance has a rating plate
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Check the mains cable
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Check switches
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Insulated pins
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correctly wired
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Ensure that the terminations are tight.
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Check the pin plugs are not bent or damaged.
Electrical test:
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Earth Continuity
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Insulation Resistance
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Substitute Leakage
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Protective Earth Conductor Current
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Touch Current
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Voltage/Frequency Measurement
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Load Measurement
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Earth Loop Resistance
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Trip Time
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IEC Lead Test
How to correctly wire a plug
Where the wires go:
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Green/yellow wire to the earth terminal - top of the plug
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Blue wire to neutral terminal - left of the plug
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Brown wire to live terminal - right of the plug
Please note that some appliances have a two-core flex with live and neutral only: these double-insulated appliances do not require an earth.
Make your last checks:
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Ensure the wires are connected to the right terminals - see image
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Be sure there are no errant wires
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Ensure the flex clamp secures the outer sheath, rather than the thinner wires. The wires may well come loose if you do not do this.
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Ensure all screws are tight
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Attach the right fuse for the appliance. Read the manual if you are unsure what amp fuse to fit
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Replace the cover and secure