Search found 19 matches

by medistat
Mon Oct 17, 2022 4:06 pm
Forum: Electric Vehicles and Charging Systems
Topic: Direct coupled solar panels
Replies: 1
Views: 4587

Direct coupled solar panels

Next door neighbour has shown me his bach 'system' which consists of six 270W panels in series, a 10A mcb and directly fed to his 3kW HWC element. I've had a poke and prod with my meter and in the hot bright sun, there is 216v DC at the cylinder with 8.35A flowing. His comment was why did he need an...
by medistat
Tue Aug 09, 2022 9:08 pm
Forum: Protective Devices
Topic: Linking RCDs in 3-phase setup...
Replies: 6
Views: 6841

Re: Linking RCDs in 3-phase setup...

Yep understand that. So will put in 3phase RCD for the 3phase sockets but 3 separates for the single phase sockets.
by medistat
Mon Aug 08, 2022 2:28 pm
Forum: Protective Devices
Topic: Linking RCDs in 3-phase setup...
Replies: 6
Views: 6841

Re: Linking RCDs in 3-phase setup...

There is NO( requirement to link mcbs on 3-phase circuits. It's perfectly OK to use individual overcurrent protection devices (fuses or mcbs). However the devices for each circuit must be grouped / labelled to show the association between them [2.9.5.2]. The only case where linking is mandated is f...
by medistat
Fri Aug 05, 2022 7:40 pm
Forum: Protective Devices
Topic: Linking RCDs in 3-phase setup...
Replies: 6
Views: 6841

Re: Linking RCDs in 3-phase setup...

Mmmm, thanks, so one 3phase RCD plus 3 x single phase RCDs in this case.
by medistat
Fri Aug 05, 2022 4:33 pm
Forum: Protective Devices
Topic: Linking RCDs in 3-phase setup...
Replies: 6
Views: 6841

Linking RCDs in 3-phase setup...

Doing a small woodwork shop and putting RCDs on each of the 3 phases at the supply point (it's a sub-board). Question is do all 3 phases need to be physically linked with a bar so that one popping takes the entire three phases out? In other words, can we fit 3 x single phase RCD's or does it have to...
by medistat
Fri Mar 25, 2022 10:52 am
Forum: Inspection
Topic: Same cable for 1 or 3 phase outlets
Replies: 7
Views: 6339

Re: Same cable for 1 or 3 phase outlets

Problem is that client employed the Inspector. May be easier to run separate feed and swallow my pride (it's a fixed quote job) rather than have the client think I'm a smartarse arguing with the I. But you've confirmed my suspicions AlecK, never heard of this new 'rule' and been doing this for years.
by medistat
Thu Mar 24, 2022 9:23 pm
Forum: Inspection
Topic: Same cable for 1 or 3 phase outlets
Replies: 7
Views: 6339

Same cable for 1 or 3 phase outlets

Just wired a farm workshop and ran 5-core 2.5 tps (3 live + N +E) to each of three outlets. MCBs on board are 3 x 20A. Outlets are all PDL 56 series and at each point, is one SO520 socket for 3-phase plus one SO320 single-phase socket. To load spread, the single phase outlets each used a different p...
by medistat
Sun Aug 22, 2021 12:36 pm
Forum: Forum User Guidelines
Topic: Marley Orannge ducting solvent
Replies: 4
Views: 10110

Re: Marley Orannge ducting solvent

JamieP wrote:
Sun Aug 22, 2021 12:01 pm
I'd say best to contact the manufacturers of the ducting and the solvent, they'll be able to inform you straight away what there products are suitable for
Tnx but if you can make head nor tail from the Marley catalogue then you're smarter than me! Thus my question. What does everyone else use?
by medistat
Sun Aug 22, 2021 11:16 am
Forum: Forum User Guidelines
Topic: Marley Orannge ducting solvent
Replies: 4
Views: 10110

Marley Orannge ducting solvent

Been using the same solvent (Marley 'Gold') that drainleyers use for the white downpipes and grey sewerpipes on the orange ducting pipe for years. However, a new apprentice has just pointed out that it's a different solvent for the orange ducting. Is this correct or is it all the same solvent?
by medistat
Tue Aug 18, 2020 10:07 pm
Forum: Buy/Sell/Wanted
Topic: For Sale: Schneider Switchgear
Replies: 2
Views: 5263

Re: For Sale: Schneider Switchgear

Chuck it in the van and use it on the next job...???
by medistat
Sun Jun 21, 2020 5:51 pm
Forum: Standards and Legislation
Topic: Controlling mains power with GPIO (In a compliant way)
Replies: 3
Views: 2791

Re: Controlling mains power with GPIO (In a compliant way)

Sir Humphrey - have faced the same issues. My solution has been to extensively use the likes of these: https://www.controlbyweb.com/webrelay-quad/ I have extensive software development experience and as these devices are all on the same network, can access them to switch or sense them. In terms of s...
by medistat
Sat Jun 20, 2020 7:20 pm
Forum: Data, Alarms, Security, & TV Distribution
Topic: ETP to OTP
Replies: 4
Views: 10243

Re: ETP to OTP

Given that fibre is high maintenance, I'd put CatV/VI into the internal building - even CatV is OK for 1000MB over <100m runs. Fibre brings a whole pile of nightmares and extra cost for the owner whereas RJ45 gear is cheap, abundant and proven. But that's not to say that the connection into the rout...
by medistat
Wed May 20, 2020 8:50 pm
Forum: Request a new Forum here
Topic: Request a new Forum here
Replies: 14
Views: 76263

Re: Request a new Forum here

How about one to cover security systems.... many of us have no idea about the difference between analogue and ip cameras and when the ip cameras guys start poking new cables in beside ours, or telling us where to put sockets for 'switches' and 'rooters' then it's a foreign language.
by medistat
Tue May 19, 2020 1:04 pm
Forum: Damp Situations
Topic: Thru-Wall Extraction (Blockwork/Insulclad)
Replies: 4
Views: 6782

Re: Thru-Wall Extraction (Blockwork/Insulclad)

Just don't drill out a stud as I've seen many times before!! Makes the wall all floppy!
by medistat
Wed May 13, 2020 11:51 am
Forum: Appliances
Topic: Recessed downlights for domestic use
Replies: 8
Views: 4415

Re: Recessed downlights for domestic use

Yes it's a shame that the likes of GU10's are available both as an LED and a 50w Halogen.
by medistat
Tue May 12, 2020 11:13 pm
Forum: Appliances
Topic: Recessed downlights for domestic use
Replies: 8
Views: 4415

Re: Recessed downlights for domestic use

True except that the GU10 LED bulbs are 230v and have the drivers built in. So if either the LEDs or the driver dies, replacing the GU10 tube fixes it.
by medistat
Tue May 12, 2020 5:52 pm
Forum: Appliances
Topic: Recessed downlights for domestic use
Replies: 8
Views: 4415

Re: Recessed downlights for domestic use

Does anyone know of a source of these recessed lights that will take a GU10 LED bulb? Seems unfair that we'd fit sealed units with a 25000hr (8.5yrs) expectation and then have to biff the complete thing and charge the customer for a callout instead of just replacing the bulb.
by medistat
Tue Apr 28, 2020 1:16 pm
Forum: Appliances
Topic: Lapidary Bench Grinder
Replies: 5
Views: 3390

Re: Lapidary Bench Grinder

True but by the time you modify a cheapie to mount the specialised turntable from this old one, the customer will have paid as much and will have ended up with a bit more asian junk on his bench that is not warranted after being modified. Realistically, what's the time involved in replacing the shot...