What size cable do I need?

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Discuss What size cable do I need? in the Commercial Electrical Advice area at ElectriciansForums.net

Boydy said:
Will be in a state, if our friend is in fact a Electrical Trainee or similar that is creeping out of domestic work.

Boydy
Click to expand...

Please don't judge. You don't know me, I don't know you. It's a private school. Only small place. I'm not creeping out of domestic. I just do what I get. I now do professional cctv systems and intruder alarm systems. I didn't know until I tried it. It's unfortunate I can't do the same with industrial work.
 
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D Skelton said:
..... is if they were not local and would never be my competition.
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Competition should be encourage, it provides value for money to the customer who is king ;) And of course customer feedback from healthy competition is the breakfast of champions and aids improvement, which all professional electricians should aspire to!
 
Yes mate, when the market is already saturated with sub-standard electricians who undercut you at every turn what we should all do is encourage more competition!

WTF?!?

The playing field isn't level, and until it is, I will not be relishing in adding to that problem!
 
By the way did I mention that I have already connected probably over 10 machines for the same factory. Ranging from 2.5mm cable up to 25mm cable. Some machines are same physical size as this one that I was going to do and they do the same work. The only time they called back was when a machine was tripping. I set overload at 7kw. The motor rating was 7. So I changed the overload to 4-10kw and adjusted it to tiny bit over 7 which fixed the problem. All this was done over the last 5-6 years. I've also done conveyer belts. Forklift chargers. A few of the bigger machines I've done cost them around a million each.
 
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electricshock said:
By the way did I mention that I have already connected probably over 10 machines for the same factory. Ranging from 2.5mm cable up to 25mm cable. Some machines are same physical size as this one that I was going to do and they do the same work. The only time they called back was when a machine was tripping. I set overload at 7kw. The motor rating was 7. So I changed the overload to 4-10kw and adjusted it to tiny bit over 7 which fixed the problem. All this was done over the last 5-6 years. I've also done conveyer belts. Forklift chargers. A few of the bigger machines I've done cost them around a million each.
Click to expand...

Your Blue Peter badge is winging its way to you as we speak.

Wear it with pride!!!!
 
electricshock said:
By the way did I mention that I have already connected probably over 10 machines for the same factory. Ranging from 2.5mm cable up to 25mm cable. Some machines are same physical size as this one that I was going to do and they do the same work. The only time they called back was when a machine was tripping. I set overload at 7kw. The motor rating was 7. So I changed the overload to 4-10kw and adjusted it to tiny bit over 7 which fixed the problem. All this was done over the last 5-6 years. I've also done conveyer belts. Forklift chargers. A few of the bigger machines I've done cost them around a million each.
Click to expand...

This is what i was explaining before ... your delving into things without understanding them...
Was the Motor a 7kw motor?
Overloads are set in amp's (different motors may vary with FLC even though they are rated the same hence the O/L is in amps )
You should set your overload to no-more than the motor FLC rating ...if the motor trips this it means their is an issue - the correct course of action would be to test the motor, run it off load while clamping it then run under load if its running higher than its FLC their is issues to address. Sticking a larger overload and setting it higher than the motor FLC is not the way to go ... the cause of the overloading usually get worse and you may now have set the O/L too high and rather than trip the O/L the motor may sustain damage. A motor on a machine shouldn't really be running at FLC it should be adequate to meet the machines requirements with room to spare.

It sounds like you have been winging it a bit with the repairs and your post contradicts your thread ..if you have so much experience fitting large machinery why have you come on here with such a basic question regarding a smaller set-up to the ones you claim to have done?
 
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darkwood said:
This is what i was explaining before ... your delving into things without understanding them...
Was the Motor a 7kw motor?
Overloads are set in amp's (different motors may vary with FLC even though they are rated the same hence the O/L is in amps )
You should set your overload to no-more than the motor FLC rating ...if the motor trips this it means their is an issue - the correct course of action would be to test the motor, run it off load while clamping it then run under load if its running higher than its FLC their is issues to address. Sticking a larger overload and setting it higher than the motor FLC is not the way to go ... the cause of the overloading usually get worse and you may now have set the O/L too high and rather than trip the O/L the motor may sustain damage. A motor on a machine shouldn't really be running at FLC it should be adequate to meet the machines requirements with room to spare.

It sounds like you have been winging it a bit with the repairs and your post contradicts your thread ..if you have so much experience fitting large machinery why have you come on here with such a basic question regarding a smaller set-up to the ones you claim to have done?
Click to expand...

>>>> Mariah Carey - Fantasy - YouTube <<<<
 
darkwood said:
This is what i was explaining before ... your delving into things without understanding them...
Was the Motor a 7kw motor?
Overloads are set in amp's (different motors may vary with FLC even though they are rated the same hence the O/L is in amps )
You should set your overload to no-more than the motor FLC rating ...if the motor trips this it means their is an issue - the correct course of action would be to test the motor, run it off load while clamping it then run under load if its running higher than its FLC their is issues to address. Sticking a larger overload and setting it higher than the motor FLC is not the way to go ... the cause of the overloading usually get worse and you may now have set the O/L too high and rather than trip the O/L the motor may sustain damage. A motor on a machine shouldn't really be running at FLC it should be adequate to meet the machines requirements with room to spare.

It sounds like you have been winging it a bit with the repairs and your post contradicts your thread ..if you have so much experience fitting large machinery why have you come on here with such a basic question regarding a smaller set-up to the ones you claim to have done?
Click to expand...

Sorry yes I meant 7 amp motor and overload was only going to just above 6. There was no number on it. It was on border line.

The ones I've done were not larger then this one. A few where similar
 
electricshock said:
What's a Electrical Trainee exactly.
Click to expand...

There is a training course for knackers who aspire to become electricians.

It lasts five weeks after which they are given a bit of paper which makes them believe they are now fully qualified electricians and they are certainly not - hence the title Five Week Wonder.

It seems there may be because of your mind boggling questions / posts you have been making and your less than professional attitude, some folk on here who suspect this is what you are and all I am going to say on that subject is "If the cap fits ....."

That - in a nutshell - is it. ;)
 
electricshock said:
By the way did I mention that I have already connected probably over 10 machines for the same factory. Ranging from 2.5mm cable up to 25mm cable. Some machines are same physical size as this one that I was going to do and they do the same work. The only time they called back was when a machine was tripping. I set overload at 7kw. The motor rating was 7. So I changed the overload to 4-10kw and adjusted it to tiny bit over 7 which fixed the problem. All this was done over the last 5-6 years. I've also done conveyer belts. Forklift chargers. A few of the bigger machines I've done cost them around a million each.
Click to expand...

I thought you said earlier that you had not done this type of work before, never done the calcs and didn't have a clue.
Do try to be more consistent.
 
Hey. I'm back. I have installed the swa cable getting professional help from someone I found. Am now currently installing cat 5e cable as the new machine needs network connection. Still need to install a switch fuse at the machine side which was out of stock. Will do that next week.
 
electricshock said:
Hey. I'm back. I have installed the swa cable getting professional help from someone I found. Am now currently installing cat 5e cable as the new machine needs network connection. Still need to install a switch fuse at the machine side which was out of stock. Will do that next week.
Click to expand...

What size cable you but in.
 
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