On site guide single core Mv/A/m question | on ElectriciansForums
Guest viewing is limited

On site guide single core Mv/A/m question

Post new thread

Discuss On site guide single core Mv/A/m question in the UK Electrical Forum area at ElectriciansForums.net

J

Jonathan Harris

-
Joined
Nov 12, 2015
Messages
17
Reaction score
3
Hello all

I have a quick question on using my on site guide. I've found this forum fantastic for help so far. It's quite simple.

I have a question which asks what the voltage drop for a single core 6mm² 70⁰c insulted cable for a single phase circuit is, enclosed in conduit.

Page 151 of the guide is the correct table to use. The table has two values, 7.3 and 6.4. There are two ref methods that are the same. The answer looks like 7.3 (3rd row as that's single phase) but row 6 states 6.4. Is row 6 for three phase or single phase? It's in the middle and difficult to tell.

Obviosuly you'll need to look in your guides, can't post a pic right now.

Thanks
 
Sort by date Sort by votes
Column sorry! But column 6 is in the middle of both. I'm guessing it's three phase but wanted to clear it up.

Edit: You clearly wouldn't have two values for single phase either. I believe I've been given the wrong answer in class.
 
Last edited:
Upvote 0 Downvote
Hmmm I'm working from the green OSG, but the columns in table F4(ii) are clearly divided up in that book. Another possible misprint in the yellow OSG ?

In my copy column 6 is for three phase circuits, yes. Cross reference it with the table in the regs for clarity.
 
Last edited:
Upvote 0 Downvote
Assuming one of those two figures is correct, you can decide which one by working out whether the voltage drop will be higher on a single-phase or three-phase circuit. You might like to draw a diagram of voltages and currents and try the effect of introducing equal series resistances in each conductor. See if you can produce a ratio like 6.3/7.4...
 
Upvote 0 Downvote
Try this, the column headers are centred.
[ElectriciansForums.net] On site guide single core Mv/A/m question
 
Upvote 0 Downvote

Reply to On site guide single core Mv/A/m question in the UK Electrical Forum area at ElectriciansForums.net

Recommended Sponsor News

Quickwire Now Sponsor ElectriciansForums.net

I am sure you will join me in welcoming our newest sponsors of ElectriciansForums.net - Quickwire! They have decided to join us after seeing you guys discussing their products here. Now we have an expert on board that you can chat to @Quickwire-Sam who will be happy to answer your queries!

[ElectriciansForums.net] Quickwire Now Sponsor ElectriciansForums.net


@Quickwire-Sam said "At Quickwire, we're all about speed, safety, and reliability. We're a family-run business, and every Quickwire connector is proudly made right here in the UK, ensuring noticeable quality. In short, Quickwire is the fastest connection method on the market. Whether you're an experienced electrician or a DIY enthusiast, Quickwire makes electrical connections ridiculously quick and easy. We're passionate about blending British craftsmanship with innovation. If you have any questions or if there's any way we can help, please just ask me!"

Exclusive Forum Offer! Free euro 2024 wall chart for first 10 responses!

Hi everyone,

We have 10 exclusive Uheat EURO 2024 Wallcharts to giveaway for Electricians Forum Members! The first 10 people to reply YES to this thread - I will message and get them sent out to you just in time for this years tournament! GO GO GO

PCBWay Now Sponsor ElectriciansForums.net!!

I hope you will all join me in welcoming our newest sponsor to the forum PCBWay! You can contact their friendly people by sending a message to @PCBWay who will be happy to answer your queries.

Welcome to the community and thanks for your sponsorship!

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

PCBWay provides services including PCB Prototype and batch Production, PCB Assembly (SMT), 3D Printing, CNC Machining, PCB Design, Electronics Modules Selling, etc. We are committed to meeting the needs of global makers from different industries in terms of quality, delivery, cost-effectiveness, and any other demanding requests in electronics.

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Thread starter

J

Jonathan Harris

-
Joined

Thread Information

Title
On site guide single core Mv/A/m question
Prefix
N/A
Forum
UK Electrical Forum
Start date
Last reply date
Replies
7
Unsolved
--

Thread Tags

Tags
column guide phase question single single core site plan table three
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top