110 extension leads

[jon4381]

Hi everyone, can someone just clarify something for me. When using a 110 volt 32 amp extension lead, what size cable would you expect to see.

 

[telectrix]

you'd probably get away with 2.5mm in free air.

 

[jon4381]

Thanks telectrix, been doing some pat testing off shore on wind turbines and from what I can see the maximum 2.5 cable can take is 27 amps. Am I missing something here.

 

[telectrix]

hint. ref; method E. alternatively, get manufacturers data on the cable. yo'ull find that flex, being multi fine strand will probably withstand a higher loading than the figures given in BS7671.

 

[uksparks]

"110 Extension Leads" what do you want that many for?? I hope you are not planning on daisy chaining them! LOL.

 

[jon4381]

It just seems a bit to close to the amp rating. When we all know they will daisy chain them and that will in turn compromise the disconnection time.

 

[telectrix]

a problem you may find is that the only fusing is on the primary ( 240V ) side of the transformer. to cope with inrush, this will probably be a 32A C type MCB.and that's for 1 transformer. if you have several transformers running on 1 circuit, then the OCPD rating will do nothing to protect the 110V cables.

 

[jon4381]

Thanks telectrix

 

[snowhead]

I bet the ambient temp doesn't get too high in wind turbine towers sat in the Sea.

 

[nickblake]

"110 Extension Leads" what do you want that many for?? I hope you are not planning on daisy chaining them! LOL.

He's working on a wind farm you'll need that many to get to the house from the turbine

 

[Silly Sausage]

He's working on a wind farm you'll need that many to get to the house from the turbine

And big fat csa ones as well.
Had a steeplejack mate and he used to say his drills barely spun with the voltage drop!

 

[telectrix]

that's because all the power is being used to turn them offshore fans.

 

[nickblake]

I personally think it would be the other way round the house would be powering the wind turbines , im sure its a only matter of time before a ship hits one of the hideous things off the north wales coast