i seem to remember that you should carry out 4 electrical tests before/during service on a gas appliance, safe isolation, correct polarity, correct earthing and ?
thanks
thanks
4 electrical tests on heating appliances
- Thread starter kirkgas
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Could it be, Select an approved test lamp or multimeter and verify its correct operation.
Locate means of isolation.
Isolate supply and verify circuit is dead.
Attach a warning notice to isolator.
Locate means of isolation.
Isolate supply and verify circuit is dead.
Attach a warning notice to isolator.
one of the guys i know sent me a text this morning when i answered the text i asked him and he reminded me it was check for short circuit
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Four 'tests' we always do;
With power off,
1. Earth continuity. (From known earth to boiler metalwork, pump, casing etc).
2. Earth resistance. (measured live to earth).
3. Short circuit test. (resistance live to neutral).
With power on,
4. Correct polarity.
With power off,
1. Earth continuity. (From known earth to boiler metalwork, pump, casing etc).
2. Earth resistance. (measured live to earth).
3. Short circuit test. (resistance live to neutral).
With power on,
4. Correct polarity.
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