Waterproof cabinet / box?

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Waterproof cabinet / box?

Home Forums General Questions Waterproof cabinet / box?

Viewing 22 posts - 1 through 22 (of 22 total)
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  • #404907
    Matt Harrington
    Participant
      @mattharrington87221

      I'm looking to site my Transwave rotary converter out of my workshop. Firstly I don't have a suitable floor space for it and secondly, if I put it anywhere else, the vibration is too much – ie on top of a cabinet or on a shelf.

      So the thought was to site it outside in a waterproof box or cabinet.

      Anyone got any thoughts on this? and, of course, where I may get one!

      Matt

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      #26554
      Matt Harrington
      Participant
        @mattharrington87221
        #404911
        SillyOldDuffer
        Moderator
          @sillyoldduffer

          How about a box from this lot. I think the hard part will be wiring it up. The regulations were tightened sharply a few years back. I expect one of the electricians will know.

          Dave

           

          Edited By SillyOldDuffer on 13/04/2019 15:19:14

          #404914
          JasonB
          Moderator
            @jasonb

            Don't they have louvred sides presumably for cooling which won't work well in a box.

            #404916
            MichaelR
            Participant
              @michaelr

              I don't know what size your rotary converter is but this item may do Link it seems to have air vents in door.

              Mike

              #404926
              Maurice Taylor
              Participant
                @mauricetaylor82093

                Would a case from a scrapped air con unit be suitable ,they live outside .

                #404929
                Matt Harrington
                Participant
                  @mattharrington87221
                  Posted by JasonB on 13/04/2019 15:24:09:

                  Don't they have louvred sides presumably for cooling which won't work well in a box.

                  They do – but was anticipating either a larger cabinet or some form of ventilation.

                  General limiting factor is that the depth (internally) need to be 450mm and then I'm going to have to use a rightangle 3 phase plug.

                  I had thought of a garden box but I think I may end up making something – just need to try and make it resilient to the elements. Maybe a mini garden shed or lean to with lining….

                  Edited By Matt Harrington on 13/04/2019 18:12:15

                  #404937
                  Nathan Sharpe
                  Participant
                    @nathansharpe19746

                    How about a plastic coal bunker? Cheaper than the Adept cabinets and larger. My 500kg bunker is approx. 600 x 1200 x 1000mm, keeps the fuel dry so should keep your RC dry. N

                    #404951
                    Bazyle
                    Participant
                      @bazyle

                      Keeping the rain off and stopping fog and temperature changes making the guts damp are different things. Electrics don't like damp, especially 400v electrics.

                      #404976
                      David George 1
                      Participant
                        @davidgeorge1

                        If you put it outside you may have to put in a small tubular heater and thermostat in the enclosure to keep condensation at bay, have done similar for compressors etc in the past. You can wire a cooling fan if necessary to cool down equipment as well. We just knocked up a wooden and board structure with plenty of room and loovered door

                        David

                        #404988
                        Matt Harrington
                        Participant
                          @mattharrington87221
                          Posted by David George 1 on 14/04/2019 07:18:53:

                          If you put it outside you may have to put in a small tubular heater and thermostat in the enclosure to keep condensation at bay, have done similar for compressors etc in the past. You can wire a cooling fan if necessary to cool down equipment as well. We just knocked up a wooden and board structure with plenty of room and loovered door

                          David

                          David, I'm tending to think about going this way and I do have a spare tubular heater !

                          Matt

                          #404995
                          SillyOldDuffer
                          Moderator
                            @sillyoldduffer
                            Posted by Bazyle on 13/04/2019 21:21:46:

                            Keeping the rain off and stopping fog and temperature changes making the guts damp are different things. Electrics don't like damp, especially 400v electrics.

                            Given the cost of replacing a rotary converter and the dangers of wet electrics, that worries me a bit too. Certainly not an insoluble problem but I think there are a number of questions worth asking before deciding on a solution:

                            • Is security an issue – theft, vandalism or curious children? (May suggests locks and strong construction.)
                            • How exposed to weather is the location? (Avoid louvres open to driving rain and plastics that don't like strong sunshine.)
                            • What's the likely range of temperature inside the box, mid-winter to high-summer? (May require insulation, heating, and cooling fans. Rotary conversion is electrically inefficient and produces significant waste heat – running one without adequate ventilation will overheat it.)
                            • Will the box and it's location be a fire risk to the rest of the property? (May suggest steel rather than plastic construction or a change of location.)
                            • Are there any legal or insurance issues it would be unreasonable to ignore?
                            • Does anyone else have an opinion? (Landlord, SWMBO …)

                            Matt's options are much wider if he lives on a farm and can put the box in a sheltered private spot. A different arrangement would be needed if the converter and wiring was to be located next to a public pavement in the window box on the weather side of a London flat.

                            Dave

                            #405043
                            Dave Halford
                            Participant
                              @davehalford22513

                              It has to be said that every cable company, no matter who built the network does exactly what is being discussed in their streetside equipment cabinets.

                              They all have mains in them and they can all be touched by the public.

                              Some get slugs crawling over the cct boards wink.

                              Nothing dies except the slugs and I don't believe any cabinets catch fire.

                              The worst thing that happens is single skin ones bake in the summer sun, which kills the batteries.

                              #405050
                              Jon
                              Participant
                                @jon

                                Other thing to consider is neighbours and the noise putting it outside.

                                Do have a 5.5kw Transwave rotary kept as backup last used in 2010. Mines as loud as a compressor under minimal load, put in some boxes could amplify the noise and vibration. Certainly would not want to have that thing of mine outdoors, neighbours would be phoning the council.

                                #405051
                                SillyOldDuffer
                                Moderator
                                  @sillyoldduffer
                                  Posted by Dave Halford on 14/04/2019 19:30:06:

                                  It has to be said that every cable company, no matter who built the network does exactly what is being discussed in their streetside equipment cabinets.

                                  They all have mains in them and they can all be touched by the public.

                                  Some get slugs crawling over the cct boards wink.

                                  Nothing dies except the slugs and I don't believe any cabinets catch fire.

                                  The worst thing that happens is single skin ones bake in the summer sun, which kills the batteries.

                                  True, but Cable cabinets are probably over the top for Matt's needs.

                                  broadband-cabinet-solutions-fttc-ftth-fttp.jpg

                                  #405121
                                  Dave Halford
                                  Participant
                                    @davehalford22513

                                    The old ones are simple boxes, the mains supply got no special treatment.

                                    You don't need a Rolls to go shopping

                                    Edited By Dave Halford on 15/04/2019 11:26:03

                                    #405123
                                    Bazyle
                                    Participant
                                      @bazyle

                                      Cable cabs don't have mains or even the ELV, it's normally 48v, and all the electronics are in sealed boxes. The telephone wire terminations are the only exposed elements which is why they can suffer from noise on the line.

                                      #405139
                                      Stuart Smith 5
                                      Participant
                                        @stuartsmith5

                                        I suppose it depends how much you want to spend.

                                        Here are links to 2 suppliers of steel cabinets:

                                        Ritherdon

                                        Glasdon

                                        Or you could make a brick cubicle with a concrete flag as a roof.

                                        #405140
                                        Stuart Smith 5
                                        Participant
                                          @stuartsmith5

                                          This a drawing of a brick cubicle used for temporary electricity supplies.

                                          Brick cubicle drawing

                                          #405161
                                          larry phelan 1
                                          Participant
                                            @larryphelan1

                                            I have a 10hp R/c to power my workshop.

                                            I mounted it on an angle iron frame,screwed to the wall,one to cut down on the noise by being mounted on a shelf [this was a no-go,too noisy ] The second reason was to save floor space.. There was still some noise from it,not a lot,but this was solved by fitting a plywood cover,open at the bottom. To date this has worked well,noise is very little,damp is not a problem. I would say,keep it inside,too easy to have it knocked off,and they dont come cheap.

                                            #405165
                                            Matt Harrington
                                            Participant
                                              @mattharrington87221
                                              Posted by larry phelan 1 on 15/04/2019 17:25:49:

                                              I have a 10hp R/c to power my workshop.

                                              I mounted it on an angle iron frame,screwed to the wall,one to cut down on the noise by being mounted on a shelf [this was a no-go,too noisy ] The second reason was to save floor space.. There was still some noise from it,not a lot,but this was solved by fitting a plywood cover,open at the bottom. To date this has worked well,noise is very little,damp is not a problem. I would say,keep it inside,too easy to have it knocked off,and they dont come cheap.

                                              Larry,

                                              I have been deliberating over this and your idea sounds like it is worth a go. I have some high density foam and was thinking about mounting it on that which in turn is on a board which is then screwed to a frame. I am thinking about boarding the loft space in the garage and so if I mount the frame above that I maybe able to save on the noise as well. Remote switching of the RC will be OK (have checked!)

                                              By the weekend I should have formed a plan!!

                                              Thanks for all the input – I have decided against an outside box ……

                                              Matt

                                              #405167
                                              Dave Halford
                                              Participant
                                                @davehalford22513
                                                Posted by Bazyle on 15/04/2019 11:30:55:

                                                Cable cabs don't have mains or even the ELV, it's normally 48v, and all the electronics are in sealed boxes. The telephone wire terminations are the only exposed elements which is why they can suffer from noise on the line.

                                                And the 750W worth of 48v comes from???

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