navitron
 
Renewable Energy and Sustainability Forum
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Anyone wishing to register as a new member on the forum is strongly recommended to use a "proper" email address - following recent spam/hack attempts on the forum, all security is set to "high", and "disposable" email addresses like Gmail, Yahoo and Hotmail tend to be viewed with suspicion, and the application rejected if there is any doubt whatsoever
 
Recent Articles: Navitron Partners With Solax to Help Create A More Sustainable Future | Navitron Calls for Increased Carbon Footprint Reduction In Light of Earth Overshoot Day | A plea from The David School - Issue 18
   Home   Help Search Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Help please - replacing panel connectors  (Read 510 times)
mikegally
Newbie
*
Offline Offline

Posts: 36


Norfolk and Chance


« on: June 30, 2018, 10:08:45 AM »

One of my MC4 panel connectors has corrosion (due to being sat on the roof tiles).

New connectors are cheap enough so i'm planning to get the ladder out and replace the corroded one.


1. What are the steps I need to take to isolate the system before starting work....and
2. What is the process to reboot once the work is done.


cheers,
Mike
Logged

never say never
Iain
Hero Member
*****
Offline Offline

Posts: 1601


« Reply #1 on: June 30, 2018, 05:24:33 PM »

Hi
Power down the AC/ isolate AC to inverter,
Open or isolate the DC breaker/ isolator

Disconnect both plugs on the panel concerned. You will only have a max of 30/40 volts DC on the wire you are working on.

Replace connector, using correct procedure and crimp tool, check new connector gland is suitable for your diameter of cable to ensure watertight seal.
Re connect plugs,
Switch on DC isolator
Switch on AC
Let the inverter reboot
Take the normal precautions working at heights etc etc

Iain

« Last Edit: July 03, 2018, 06:10:35 PM by Iain » Logged

1.98kWp PV (11 x Sharp 180 and SB 2.5)
20 x 65mm Thermal and 180ltr unvented
Powervault 4Kw
9000ltr rainwater storage   Plymouth
http://www.bdpv.com/fiche_utilisateur_en.php?util=iain
http://www.sunnyportal.com/Templates/PublicPageOverview.aspx?plant=cba8d47f-bf09-4533-a105-4303b353f20f&splang=
mikegally
Newbie
*
Offline Offline

Posts: 36


Norfolk and Chance


« Reply #2 on: July 02, 2018, 10:23:35 PM »

thanks Iain....Ill give it a go soon.
Logged

never say never
Tiff
Hero Member
*****
Offline Offline

Posts: 911


« Reply #3 on: July 03, 2018, 02:00:12 PM »

I would also add to make sure you crimp the wire correctly, I've seen one that was done inncorrectly where the installer thought the part to be crimped was for strain relief on the cable, if that makes sense.

This guide is good with lots of photos:

http://www.pbase.com/mainecruising/solar_mc4_terminations&page=2

Apologies if I'm telling you stuff you already know.
Logged
mikegally
Newbie
*
Offline Offline

Posts: 36


Norfolk and Chance


« Reply #4 on: July 04, 2018, 08:25:34 PM »

Thanks Tiff,

very helpful.

Mike
Logged

never say never
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
SMFAds for Free Forums
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!