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shading

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  1. M

    shading by telephone cable?

    sorry experts, i'm new to this so a bit paranoid! how much will the shadow cast by a bt supply cable approx 3ft above the array affect the system? i thought very little, but apparently other quotes have made specific reference to it.thanks in advance!
  2. O

    shading from next door

    Hi , we are pricing for a 3.7kw system on a bungalow on a 30 degree slope facing south. i am having trouble working out how to set the shading parameters in pv sol pro. i am concerned what effect the bungalow next door will have on the pv output its roof faces our proposed job. the bungalows...
  3. G

    When not to install solar !

    Just getting into solar and after a little advice. When surveying a roof for solar panels at what point do you decide the panels should not be installed ? percentage of hard shading/soft shading, distant building that obscure direct sunlight in winter < 20 degrees angle but ok > 20 degrees, any...
  4. M

    Shading issues?

    We have just been to look at a house which is located next to a park with trees to the east of it (well over 100ft). Shadows the south facing roof completely until nearly midday which it is then clear until sunset. The trees are decidous. Now for the 100 questions. What is the best option...
  5. D

    Shading & bypass diodes

    Chaps, We're just installing a 6 panel array in which one of the panels gets shaded around 2pm. There's no room to move it out of the shade and we can't put in fewer panels without moving to micro-inverters (which we're not yet experienced with). Just thinking through how much of an effect...
  6. R

    Shading sun path viewer

    Hi, I'm looking for a sun path shading viewer thingy. I saw one a while ago which had a digital camera mount which seemed like a good idea but I can't find it again. If you've got such a thing do you think it's good?
  7. gr7

    Calculate distance between rows of panels on flat roof

    Does anyone know how to calculate the required distance between rows of modules to avoid any shading issues? I may need to mount the panels at less than 30° to avoid the need for planning permission and would rather not use mounts such as the Solion model as these waste valuable roof space...
  8. N

    Shading issues on PV array

    Evening all I work for a firm in Kent installing PV systems on mainly domestic properties. We have just finished installing a 1.8kw system. The problem is that there are major issues with shading from the neighbours roof. The sun only comes out from behind the roof fully at around 3 o'clock...
  9. S

    can someone please confirm my working out, just for piece of mind.

    please can someone confirm my working out of a annual return, as this is my first quote and just need confirmation that i have done it right. the system is a 22 panel 180W bp mono system and i am assuming the customer will be exporting 50% 22 panels x 180W =3960W or 3.96kW this will...
  10. J

    Can i overcome Shading?

    Is it possible to overcome shading with a 10 x 235w panel 2.35kW system with by-pass diodes? some panels come with by-pass diodes installed also. can someone help with pulling together pros and cons aswell?
  11. S

    Site survey for MCS

    I'm about to do my first sight survey. This will be for my MCS job with the NICEIC. To be honest i'm not 100% sure of what i'm doing but i think the only way to get to grips with it is to work one out. I'll be measuring the roof, checking the exact direction it faces, working out the roof...
  12. M

    Neighbours extension/growth of tree causing new shading in the future

    I was asked an interesting question earlier from a potential customer and I couldn't give them an answer. She has had a new extension built up to the boundary line with her neighbour and she wants to have a 4kW solar array installed on the roof facing her neighbour. I was concerned how much...
  13. M

    Understanding shading

    I'm trying to work out how many panels I can get on my south facing roof but I'm a little confused with regards to shading. It looks like the only shading I will get will be from a neighbours roof but only during the depths of winter. Does anyone know how to calculate potential yield of the...
  14. P

    solar survey

    Hi all I just wondered how other peeps go about surveying a domestic property for solar pv? Any tips or advice? Does anyone use any specific type of software to help with shading and sun paths etc?

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