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Installation instructions & user guide
T210042 v1.00 March 2022 - InstaTap Commercial
SECTION 6 Installing the under counter appliances
6.14 Earth continuity test, UCB & UCC
6.14.1 To test the earth continuity
• Isolate the appliance from the
electricity supply.
• Set the meter to the lowest ohms
(Ω) scale and set to a reading of 0Ω
with the meter probes connected
together.
• Connect one of the meter probes
to the earth wire of the mains cable
or earth pin of the mains plug.
Insulation resistance
meter or DMM
• At installation, the earth
continuity of both the UCB &
UCC must be checked. Use an
insulation tester, appliance tester,
DMM or continuity tester with an
accuracy of Class 5 or better (±5%
at full-scale deflection).
<1.0
Ω
!
UV
!
!
!
All accessible metal parts must
be earthed.
• Connect the second meter probe to a bare
patch of metal or a screw (the edge is best)
on the appliance and read the display.
• Repeat with the second test lead touching
the metal body of the tap.
• All readings should be less than 1Ω.
• If any of the reading are above this value,
check the earth connection inside the
appliance.
