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post #21 of 26 (permalink) Old 08-03-2014, 21:45
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Hi Peter, sorry if I'm being a bit thick here!

I have 2 100W panels to fit this week when I get my van back from some warranty work.

I have ordered a couple of these to connect the 2 panels in parallel and give me 2 cables to feed down to the controller.
http://cgi.ebay.co.uk/ws/eBayISAPI.d...E:L:OC:GB:3160

Provided I'm careful with marking polarity on the cables, am I safe doing that or must I use these inverse diodes (a new term for me) in the supply line. I had hoped to avoid sticking a square box on the roof.

Thanks for the advice.
Geoff.
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post #22 of 26 (permalink) Old 09-03-2014, 08:29
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Inverse diodes should be already fitted in the junction box on the back of the panel.

Fitting blocking diodes when you have more than 1 panel is good practice but by no means obligatory.

Peter
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post #23 of 26 (permalink) Old 09-03-2014, 09:55
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OK, that's great, thanks very much.
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post #24 of 26 (permalink) Old 12-03-2014, 18:51
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Would these knobs we use to get the cables into the box be watertight even if fitted on the front of the box and the MH? With wind and rain hitting them in 70 m/h?



Quote:
Originally Posted by listerdiesel
I'd not use what we call 'Chocolate Blocks'
Thanks - we got something better like you suggested.

Quote:
Originally Posted by listerdiesel
Those are 6A diodes by the way
Ours are more heavy duty - but looks the same - so they should be OK. The guy at the store did some calculations and added a safety margin.

Quote:
Originally Posted by listerdiesel
I've got loads of these, drop me a PM with your address and I'll post a couple on Monday.
Thanks again, but they would probably need 3-4 weeks to clear customs since I am in Norway.
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post #25 of 26 (permalink) Old 12-03-2014, 19:28
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Are the 'knobs' cable glands? Ours are IP68 rating, never had a drop of water through them.

http://uk.rs-online.com/web/p/cable-glands/3658488/

Peter
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post #26 of 26 (permalink) Old 12-03-2014, 23:29
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Quote:
Originally Posted by listerdiesel
Are the 'knobs' cable glands? Ours are IP68 rating, never had a drop of water through them.

http://uk.rs-online.com/web/p/cable-glands/3658488/

Peter
Yes, cable glands. And thank you again for your help!
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