Electrical Advice

Zs too high Discussion ThreadZs too high Electrical Advice

I have a Ze reading of 0.35 on a TNCS system and I've had the DNO out to check and they say its ok.

From my main board I have 2x 10mm sub mains feeding another board and my Zs on the cables is ~0.45 ohms. Max allowed according to BS7671 is 0.35 ohms. What can I do in this instance as the high Zs is caused by the high Ze which the DNO has okayed.

Thanks for the input.

Zs too high for the original thread on...

 

Fire alarm cert for extra smoke detector Discussion ThreadFire alarm cert for extra smoke detector Electrical Advice

Morning, do u need to produce a separate fire alarm cert for niceic if I am just adding an extra smoke to existing system. I understand if it was a new install grade D domestic then I would complete a full cert for that. Do I have to fill in a minor works like you do for an alteration to an electrical circuit?
Thanks

Fire alarm cert for extra smoke detector for...

 

Please read your Conversations (Private Messages) Discussion ThreadPlease read your Conversations (Private Messages) Electrical Advice

You will spot a new notice if you have an unread PM land in your inbox. It'll be massive at the top of all pages and won't go until you've read them all. And it'll help you keep your mailbox tidy.

We get a lot of emails saying they can't find a link to it so I thought I'd make it more obvious for you all. 🙂

Done this network-wide.

Please read...

 

Replacing LED chip on ceiling light. Discussion ThreadReplacing LED chip on ceiling light. Electrical Advice

I have bought new chips as per photo. Does it need to be held in place with insulating glue, and should I solder between the bare areas as per the old one not removed yet? Thanks for any...

 

Safe Summerhouse Supply Discussion ThreadSafe Summerhouse Supply Electrical Advice

Good Evening Folks!

I recently started on my house for an Outhouse/Summerhouse 35m away from main Property.

It requires :-

x5 Double Sockets
x2 Strip Lights

The sockets will be used for Televisions and Charging.

I have 2 ways i’d like to to this.

A 6mm SWA from Main CU/32A RCD clipped Direct to Outhouse.

Onto the back of a 2.5mm Ring Circuit which will interpret a 5A FCU Spur for the 2 Lights...

 

Economy 7 confusion Discussion ThreadEconomy 7 confusion Electrical Advice

Hello all,

We have just moved into our new place and it is all electric running a economy 7 set up.

I have done some looking and it seems I want my off peak switch always on and keep the on peak switch off. My confusion is nothing is marked.

I have attached photos of the water heater with the only switch I can see turned on. This looks like it’s the off peak as it’s coming from the bottom of the tank...

 

Consumer Unit cover not on properly Discussion ThreadConsumer Unit cover not on properly Electrical Advice

I had an EICR a few months ago and have only just now noticed the Consumer unit cover is not on quite properly.

Below is a photo before the EICR...

 

Insulation resistance test readings. Discussion ThreadInsulation resistance test readings. Electrical Advice

Had an interesting one today, ring circuit blown the Mcb in a kitchen apparently a few times over last day or so. It has blown once when nothing was really in use in kitchen so kind of ruling out overload.
When turned up and turned it back on it held for maybe 5 minutes before blowing again…. Unplugged everything and tested IR which was down on L-N,L-E & N-E.
Rcd never tripped...

 

Is the main fuse head satisfactory protection for SWA supply cable? Discussion ThreadIs the main fuse head satisfactory protection for SWA supply cable? Electrical Advice

Commercial/Industrial installation. Summary of installation:

Main feeder pillar contains TNCS incoming supply single phase 100A main fuse, 25mm DNO tails, meter, 100A double pole isolator switch, 25mm tails/16mm CPC to 63A rotary isolator, 10mm SWA cable 25m run to digital advertising panel into a 100A double pole...

 

New project, advice sought Discussion ThreadNew project, advice sought Electrical Advice

I'm starting a new project on Monday, new dental practice conversion from a shop.

Nothing new here, customer doesn't know what electrical heating they're having, doesn't know what electric hot water they're having, hasn't decided outlet locations, switch locations or just about any aspect of the electrical installation. There are various dental specific specifics they haven't confirmed as yet...

 

3ph Parallel Thyristor Rectifier Not Sharing Current Discussion Thread3ph Parallel Thyristor Rectifier Not Sharing Current Electrical Advice

Good afternoon all,

I have a problem which has really melted my brain this afternoon and I am hoping someone can offer some insight.

My company had recently designed and built a three phase thyristor bridge rectifier for our customer.
One of our customers requests was that each thyristor had redundancy, so for each thyristor position in a...

 

earthing switches Discussion Threadearthing switches Electrical Advice

Is it acceptable to put plastic screws in switches when there is no earthing to them to satisfy eicr?

earthing switches for the original thread on Electricians Forums

 

extend power cable - Optoma screen Discussion Threadextend power cable - Optoma screen Electrical Advice

Hello,
I have optoma screen de-9120ega | Optoma United Kingdom - https://www.optomaeurope.com/product/de-9120ega
which has 3g 0.75mm cable. I want to use extension ... so I was thinking, is there any reason for such a device use 0.75mm cable? I assume few electronics and small motor is inside.

Can I buy a extension with 3g 0.5mm?

Thanks!

extend power cable - Optoma...

 

Charging 12v Battery with Solar Panel? Discussion ThreadCharging 12v Battery with Solar Panel? Electrical Advice

I use a small 12v 1.5w Solar Panel to charge my engine battery, quite often it's not powerful enough and the battery loses charge.

If I buy a bigger one say 30w, would that still trickle charge (albeit faster) it, or would it damage it?

TIA

Charging 12v Battery with Solar Panel? for the original thread on Electricians Forums

 

How can they justify the increase in your electricity bill !? Discussion ThreadHow can they justify the increase in your electricity bill !? Electrical Advice

Just had a email from E-on to say my yearly bill is going up £81 from £103 - £184.
Now this has got me wondering how they can justify this ---

Firstly it is for a spare feeder pillar in a field that uses 0 kWh per year , so the increase from 19p to 29p per kWh should not effect the end bill.
Added to that , even if It was...

 

Boat engine electrics Discussion ThreadBoat engine electrics Electrical Advice

Anybody got experience with boat engines?

I’m going to have a look at why the engine won’t start for a family member up at Edinburgh.
Just want to know what to look for

I’ve been told it turns over, but doesn’t start

Owner knows there’s a number of battery’s, but don’t know if 12/24 volt or the Ah size.

The batterys should charge up when the 230v is plugged into the hookup. (Would that be separate...

 

Looking for Trusted Electricians in Cairns, QLD? Discussion ThreadLooking for Trusted Electricians in Cairns, QLD? Electrical Advice

If you’re in Cairns and need reliable, high-quality electrical solutions, I highly recommend checking out Allure Energy. They’re more than just electricians – they’re locals with a deep understanding of Cairns' unique energy challenges.

With customised energy assessments and a focus on renewable technology, they aim to save you money while promoting...

 

The Essential Need for a Attorney Competent in Disability Law Discussion ThreadThe Essential Need for a Attorney Competent in Disability Law Electrical Advice

What Reason Enlisting Your Social Security Inability Lawyer Can Be Important.
Engaging Your Social Security Inability Lawyer Proves to Be Compulsory.


The SSA Manages numerous efforts from job-loss protection to economic relief, and also deals with incapacity remuneration for individuals not able to perform due to chronic...

 

Consumer unit Discussion ThreadConsumer unit Electrical Advice

Hi,

I have been living in my new house for about a year. I checked inside my consumer unit (fuse box) and took a photo. I am not sure if everything looks okay, especially the busbar. The circuit breakers seem a bit misaligned. Could someone with more electrical knowledge take a look and tell me if everything is safe...

 

Providing Lighting from Motor Supply Discussion ThreadProviding Lighting from Motor Supply Electrical Advice

Apologies for the vagueness in the title. You'll have to forgive my ignorance on the below too - I'm only just touching on 'industrial' as my work is generally more ' commercial'.

I'm faced with a small pump house - rainwater sumps which takes the site rainfall and pumps it out. As an aside - the pumps and their control gear are lovely - still sporting their paper...