three phase welder? help please

[musicspark]

Hi chaps

I was asked to do some PA testing in a local garage today and have com away

with a few questions.

there was a bench drill on a stand, when I opened the plug there was no Neutral connected (three core and earth). would an appliance this small normally have a delta motor?

Secondly there was an old ARC welder with a Three Phase plug which was wired with two core and earth L, N ,and E. I am new to the trade and have not come across this before. Help?????

The last question is of a more basic nature; single phase mig welder needs a new flex. What kind of cable would be good for that appliance, in that environment -heat, oil, etc?

 

[spinlondon]

The drill does not require a Neutral, as it is obviously 3 phase.

3 phase motors generally use less current to do the same as a single phase motor.

I don't know what you mean by a delta motor?

i would imagine that the 3 phase plug was used either because the socket was existing.

It could be that an old welder was 3 phase, and they couldn't be asked to provide a new circuit. It could be that they didn't want to lose the 3 phase socket, could be used for other equipment, or they might in future obtaian a 3 phase welder.

Could use an Artic cable, or perhaps SY? I would consider how cold the workshop could be during the winter, and choose a suitable cable.

 

[the doctor]

Hi chapsI was asked to do some PA testing in a local garage today and have com away

with a few questions.

there was a bench drill on a stand, when I opened the plug there was no Neutral connected (three core and earth). would an appliance this small normally have a delta motor? More likely to be "star" connected with no neutral- no probs

Secondly there was an old ARC welder with a Three Phase plug which was wired with two core and earth L, N ,and E. I am new to the trade and have not come across this before. Help?????it is ok to wire a single phase welder into a 3-phase plug by using one of the phases and ignoring the other two- no probs

The last question is of a more basic nature; single phase mig welder needs a new flex. What kind of cable would be good for that appliance, in that environment -heat, oil, etc?not sure on that one:O i guess a butyl type flex perhaps?

 

[musicspark]

I figured 1.5 butyl or 2.5 arctic but the the one that's on it is black.

Is SY suitable to use as flex on portable equipment?

 

[Apache]

I figured 1.5 butyl or 2.5 arctic but the the one that's on it is black. Is SY suitable to use as flex on portable equipment?

For future reference there's only a need to ask each question once

 

[The Godfather]

I figured 1.5 butyl or 2.5 arctic but the the one that's on it is black. Is SY suitable to use as flex on portable equipment?

Follow this link for the above question

http://www.talk.electricianforum.co.uk/showthread.php?p=69963#post69963

The Godfather

 

[musicspark]

Thanks for the tip Apache, and Godfather - I like your sense of humour!

Forgive me guys I'm not completely familiar with all the etiquette yet for this forum but I won't be offended if you keep me right.

 

[The Godfather]

Thanks for the tip Apache, and Godfather - I like your sense of humour!Forgive me guys I'm not completely familiar with all the etiquette yet for this forum but I won't be offended if you keep me right.

My boys are pleased.

As for this forum, it is friendly and helpful, no abuse allowed.

Don

 

[benji]

how big is the ark welder? some welders are 2 phase

 

[Badger]

abuse is

on here :^O

 

[musicspark]

My boys are pleased.As for this forum, it is friendly and helpful, no abuse allowed.

Don

Hey,,,,,,Don

I never abuse nobody,,,,,,,,,, Respect,,,,,,,respect