Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: electric cable  (Read 1522 times)

regiment

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,740
  • Location: perranporth cornwall
electric cable
« on: October 21, 2015, 11:01:16 am »

would an electric cable under two foot of water have any effect on 27 MHz and 40 MHz radios  the reason I ask is that the local council have just   put a water fountain  on the lake   gordon
Logged

Netleyned

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 8,984
  • Location: Meridian Line, Mouth of the Humber
    • cleethorpes mba
Re: electric cable
« Reply #1 on: October 21, 2015, 11:04:47 am »

We have a fountain in the middle of the lake Gordon and
We have no problems on any  frequencies.

Ned
Logged
Smooth seas never made skilful sailors
Up Spirits  Stand fast the Holy Ghost.
http://www.cleethorpesmba.co.uk/

dougal99

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 3,085
  • Huntingdon, Cambs, England
  • Location: Huntingdon, England
Re: electric cable
« Reply #2 on: October 21, 2015, 11:27:20 am »

With all the cut backs I. doubt it will be operating very often anyway
Logged
Don't Assume Check

thething84

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 189
  • Model Boat Mayhem is Great!
  • Location: Newmarket, Suffolk
Re: electric cable
« Reply #3 on: October 21, 2015, 10:42:22 pm »

if its just been put it, technically I believe it should be operating at 12v anyways due to current legislation.
Logged
If it ain't broke! Fix it anyway!

derekwarner

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 8,486
  • Location: Wollongong Australia
Re: electric cable
« Reply #4 on: October 21, 2015, 11:03:15 pm »

 %)...well one would hope that it is a low voltage installation, but we also must remember that Flyght manufacture 3 phase 575 volt submersible pumps

One good feature is that they are water cooled O0......& when the water runs out they trip out {-)........

With respect to interference, would 2 amps @575V create less of a problem than 15 amps@115V..??.............Derek
Logged
Derek Warner

Honorary Secretary
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

malcolmfrary

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,773
  • Location: Blackpool, Lancs, UK
Re: electric cable
« Reply #5 on: October 22, 2015, 09:56:09 am »

If it DC, no.  If AC, there is a big difference between 50 cycles per second and 27 million cycles per second, so probably no.  An unsuppressed DC motor might give problems at the kind of power needed to chuck enough water high and fast enough.  I would be more worried about the effect of water falling on my boat than any interference coming off the wiring. 
As Dougal99 says, once they get the bill for the power needed, it might not run that often anyway.  Once you allow for conversion inefficiencies, you get about 1 horse power per kilowatt.  One HP will move 550 pounds one foot upwards in 1 second.  To get a noticeable amount of water high enough into the air at any one time takes quite a bit of power.
Logged
"With the right tool, you can break anything" - Garfield

sparkey

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,225
  • I think I am as mad as I think I am then I am mad
  • Location: wandsworth
Re: electric cable
« Reply #6 on: October 22, 2015, 04:31:49 pm »

 :-)) We have two fountains at our lake,the only problems we have encountered is when they are switched off and you don't see the bases which the boats can run into also the underwater cables can snag the keel or props,I don't thing you will have problems with radio's as we never have...Ray. :-)) :-)) :-)) :-)) :-))   
Logged
My boats are all wood like my head fluctuat nec mergitur
Pages: [1]   Go Up