mtt.tr
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- Essex/Suffolk border
As a bit of background to this my house is pretty old and I've probably checked out only 4 out of the 9 circuits.
SWMBO had the washing machine people out the other day. We have a POS Hotpoint WMD960 on which she has a service contract at about £20 a month. Been nothing but trouble since new and we have them out twice a year. The bloke Friday was saying the 1600rpm spin on this model was its main selling point when new but in reality too much for the bearing assembly in the drum. Consequently we've had a few bearing changes which means splitting the drum and replacing the complete back half which is plastic.
It's a big job, one time the engineer had to borrow my grinder, another time he was short on I think M8 bolts which I supplied.
This time the guy took one look and said he needed to do an electrical test. Plugged in something with pass/fail lights, not much more than a socket 'n see and said "I can't do anything as the reading is over 200 Ohms" and promptly left.
Sod's Law my MFT batteries were dead. Something didn't seem quite right. This is the form he left:
View attachment 389230
Correct me if I'm wrong but it's Ohms not "ohms". Then, the install does have RCD protection! I reckon he just didn't want to do it.
He said it's over "200" but his writing is illegible in part, "less than 2??". No idea what that means.
Where do they get 2 ohms from as well?
Bottom line is I don't think they wanted to do the job. I've told SWMBO to cancel the contract and put the £240 pa towards a new machine every couple of years.
Of course she "likes" the bloody thing. I can get the half drum kit for around the £100 mark.
As it stands, with the rod work, I'm measuring around 7 or 8A pfc. So that's what 28 to 32 Ohms.
Cheeky b'stards sent an email too saying how they were glad to have been able to fix the machine!
Why are you worrying about the PFC, you check this and PSC to confirm that the circuit breakers is suitably rated to break the maximum possibly current,
Or if you are relying on the Pfc and psc to make disconnection times we know the Psc will be made and pfc is dealt with a 100ma Rcd
. The PFC being more of an issue on a tncs earth arrangement we've had to uprate maximum breaking capacity when near the substation.
So yes
You are getting far less than 200ohm which is acceptable, the regs say to put in a 100ma time delayed rcd after the incomer to protect from the high resistance at the earth this then means PFC isn't significant any more
Though you can omit this of the wires are mechanically secured and not liable to rub through (which doesn't happen) obviously still need Rcd protection
Surely better to drop £20 a month into a biscuit tin? My S-I-L got ‘hoover insurance’ once, and got some pee taken for that…
