30 Circuits, Wow, does that include completion of test certificate and locating un-marked circuits.
depends if your any good at fixing the problem yourself. i rarely get anyone else to fix any of my vehicles. only if its something i cant do or dont have the time to doThat could backfire on you.
I once took my car for an MOT to my usual garage, but unknown to me it had changed ownership.
If failed on several very minor things, one of which was an exhaust hanger that needed about 1 minutes welding to fix it.
The useless new owner did not do welding. : headbang
I would rather take my car for MOT somewhere that had the means to fix it should it need it. I might not always choose to get them to fix it, but I want that option.
Testing JUST R2 on a cooker could be meaningless. What if it were a dual fuel cooker. It's mains could be totally disconnected but you would be measuring the return via the gas pipe and bonding. So no I wouldn't even think about just making an R2 measurement and extrapolating from that.
- On a cooker/oven circuit the same argument could be applied. Often isolators are inaccessible and to access is difficult and time consuming. If r2 is say 0.3 ohms to the actual cooker metalwork what are the risks are in a calculated value?
- How do you know what the end of a circuit is - guess?
- How do you determine whether there are spurs off the ring on an old installation. The cross connection is great in theory - but with old circuits the variance on socket connection resistance makes this a guess at best
On another note; As insurance companies are insisting on reports more frequently it goes to say that we are putting our name to something that can be used against us in the event of an incident. I only have public liability insurance and I don't think this would help me in the event that the insurance company take me to court. I think its time to look into professional indemnity insurance or be a Ltd company, would hate to lose my house, any thoughts?
Devils advocate here -Testing JUST R2 on a cooker could be meaningless. What if it were a dual fuel cooker. It's mains could be totally disconnected but you would be measuring the return via the gas pipe and bonding. So no I wouldn't even think about just making an R2 measurement and extrapolating from that.
The end of the circuit it the furthest accessory, but if in doubt measure at several points and the one with the highest reading is the end,.
the figure 8 test is supposed to identify spurs. If the sockets are in that state that they are giving poor readings, suggest replacing them, or take measurements from the terminals on the back of the socket.
Even more tight fisted - use ext lead at handy socket with earth connected through to MFT nulled at MET. Cost £0.00!!!too tight fisted to buy those - crocodile clip £2.50, long length of single core £10 :slap
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