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Electrical Inspection & Testing Forum
mA Tong Tester recommendation cheapo.
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<blockquote data-quote="roys" data-source="post: 502704" data-attributes="member: 5044"><p>Story first:</p><p></p><p>Fitted an RCBO board in my own house about 18 months ago after I rewired it, every 2 or 3 months the kitchen/ until ring 32A RCBO will trip. IR on circuit is perfect, now checked IR several times, had most of the face plates back off, checked that no insulation was pinched, thought I had found it, put a bit of sleaving on the very slightly marked insulation couple of months ago. but got a random trip yesterday. Couple of times the trip has been when the combi was running, once the washing machine was on final spin function, once tumble dryer was on, so can’t get any consistency on the trip. New combi, new fridge freezer, new tumble dryer, not so new washing machine but that was only on for one of the trips (yesterday’s).</p><p></p><p>Put my ancient RCD tester on the circuit, x1 tripped at 36mS, x1/2 no trip.</p><p></p><p>Next step to me is to put a mA tong tester on it to see how much leakage is on circuit in case there is high general leakage on the circuit and when something else fires up it is enough to trip it over the edge.</p><p></p><p>If there is high leakage it gives me something to hunt down, if not then change RCBO, then next mmmmm</p><p></p><p>So back to start, I want to buy a cheapo, fairly accurate mA clamp on tester. I am retired so it won’t be getting much use, so don’t want to be spending £100’s on a tester I will hardly use or be getting calibrated annually, seen the Uni-t UT210 at about £35 anyone got one, any good or any other suggestions.</p><p></p><p>Cheers chappies</p></blockquote><p></p>
[QUOTE="roys, post: 502704, member: 5044"] Story first: Fitted an RCBO board in my own house about 18 months ago after I rewired it, every 2 or 3 months the kitchen/ until ring 32A RCBO will trip. IR on circuit is perfect, now checked IR several times, had most of the face plates back off, checked that no insulation was pinched, thought I had found it, put a bit of sleaving on the very slightly marked insulation couple of months ago. but got a random trip yesterday. Couple of times the trip has been when the combi was running, once the washing machine was on final spin function, once tumble dryer was on, so can’t get any consistency on the trip. New combi, new fridge freezer, new tumble dryer, not so new washing machine but that was only on for one of the trips (yesterday’s). Put my ancient RCD tester on the circuit, x1 tripped at 36mS, x1/2 no trip. Next step to me is to put a mA tong tester on it to see how much leakage is on circuit in case there is high general leakage on the circuit and when something else fires up it is enough to trip it over the edge. If there is high leakage it gives me something to hunt down, if not then change RCBO, then next mmmmm So back to start, I want to buy a cheapo, fairly accurate mA clamp on tester. I am retired so it won’t be getting much use, so don’t want to be spending £100’s on a tester I will hardly use or be getting calibrated annually, seen the Uni-t UT210 at about £35 anyone got one, any good or any other suggestions. Cheers chappies [/QUOTE]
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