Help

[mcgaw81]

I was ask to put sockets and lights into a shed, which i thought was a nice wee job for a morning.

I assumed it was just a garden shed. So pop round to have a look, the shed turns out to be 60ft x 40ft!!!!!, he never mentioned the size.

Anyway he wants to keep cost to a minimum, same as everyone these days, my question is what is the most cost effective lighting? We did discuss flu's as the cheapest lights to install.

Also the metering arrangement that supplies the house is within in the 'shed', and is a TN-S supply with a Ze of 0.38ohms, however the voltage is only 213v. Is this ok? what are the tolerence, i think its 10%/6% but can't mind which way round is this right?

Thanks in advance

 

[Andy™]

whats the height?

how much light does he want (

maybe a few rows of flossy's?

and its -6% - or 216V

 

[mcgaw81]

So my 213v is too low will have to contact Scottsh Power.

Sorry forgot to say the height is approx 14ft, he never mentioned cost just that he wanted cheap as poss.

 

[Andy™]

to get an average of 300 lux you will need

2x 70w 6x5

2x 58w 6x6

1x58w 9x8

1x70w 6x5

if you find out what he plans to do there, and how bright the place need to be, post it here

 

[mcgaw81]

Storage area to start with then used for livestock in winter months, but he wasn't totally sure.

 

[NozSpark]

Then you'll need to use anti corrosive fittings and IP rated sockets & switches as livestock sweat alot!!

Also all cables in conduit as livesotck feed will attract rodents.

 

[mcgaw81]

thanks Noz have thought of that part already, was going to use PVC conduit to keep the cost as low as possible for the client.

 

[NozSpark]

As for lighting... how about metal hailide fittings??

 

[mcgaw81]

As for lighting... how about metal hailide fittings??

Never thought off them, just thought flu's as they are cheap, i'll search for hailide fittings and compare light output and cost

Thanks

 

[mcgaw81]

The metal halide fittings are not as expensive as i thought, thanks again Noz

 

[NozSpark]

I did a barn (stable) a few months ago, prob about 15m square and 5m high.. used a 150w metal hailide hqi fitting and it gives loads of light

 

[mcgaw81]

i'll need about six off them which would look not to bad and can go around the building and could do away with my need to hire scaffold.

 

[SLIPSHOD & SLAPDASH]

Remind me, is it a 300mA Rcd that should be used when livestock is around. We dont get many farms up ere in the smoke.

 

[SLIPSHOD & SLAPDASH]

That voltage at the intake seems very low. Have you worked out the volt drop at the shed and the higher current draw ?

 

[SPECIAL LOCATION]

Also the metering arrangement that supplies the house is within in the 'shed', and is a TN-S supply with a Ze of 0.38ohms, however the voltage is only 213v. Is this ok? what are the tolerence, i think its 10%/6% but can't mind which way round is this right?Thanks in advance

You be needing to refer em to Appendix 2, pg 242.

230v +10% -6% which is 216.2v - 253.0v

Double check your meter, then give em a call!

 

[mcgaw81]

That voltage at the intake seems very low. Have you worked out the volt drop at the shed and the higher current draw ?

Haven't done the calcs yet, getting a price together to see if its worth doing the job. As for the 300mA RCD, i'm not sure but thanks for highlighting it. Will have to look into that.

 

[SLIPSHOD & SLAPDASH]

Depending on your wiring ( and i am unsure about the 300mA Rcd as i dont have any books to hand) it may be cheaper to just put a 17th edition board with 30mA Rcd's.

 

[SLIPSHOD & SLAPDASH]

Woops, just re-read your post and note the intake is inside this shed. Not to much volt drop there then but it still seems low. I would be interested to measure the voltage in the house, when a heavy load is on.

 

[SPECIAL LOCATION]

Woops, just re-read your post and note the intake is inside this shed. Not to much volt drop there then but it still seems low. I would be interested to measure the voltage in the house, when a heavy load is on.

I am worried you just like Heavy Loads there Slips!!

lift that wheelbarrow! ]