Help/Advice with Long cable runs in garden

[Sparky28]

Domestic property



Supply number 1
6 flood lights 4x400watt= 1600 watts
250meters from board to closets corner of tennis courts

Tennis court size
23m x 10m

My calculations are suggesting a
16mmsq cable
2.4% volt drop

Would anyone have any advice for doing long distances in a garden?

• 10-16mm to a halfway point and distribute out for both circuits
• apply diversity?

Supply number 2
Driveway 150meters
Cable length 200meters from fuseboard to 15 bollards lights (15x5w)=75watts

calculations
230v
75 load
1.5mmsq cable
Volt drop 0.8%

Many thanks

 

[davesparks]

I did think about switch at main house but if we go down there route of fuseboard by the tennis court the double socket would only work when switch locally is on.

The double socket was only a suggestion.

This could still be done relatively easily with a 4 core cable.

 

[Sparky28]

Just wondering about the floodlights. Are these LED, halogen or something else?

LED

 

[davesparks]

Customer had ask if they can control it through there phone or app

You'd think a physical switch would be more suitable wouldn't you? But I guess if you can afford a tennis court and have enough land for it to be 250m away from your house it's probably against the rules to have something as basic as a normal switch.

 

[pc1966]

The 3% and 5% volt drop limits are there to be used in the absence of knowing tge specific tolerances of the equipment being installed.

Hmm, that does not seem to fit given the ESCQR allows +10% / -6% on suooly voltage and so any equipment ought to cope with that?