Search Results for ‘solar’

Hello fellow tradesmen, I came across a rule in sec 64 in the code book which I have no personal experience in, and wanted to ask any and everyone with an opinion if all of you agree with what this study app is suggesting. I personally think that the location should at the supply location, but...

Client has purchased 8 x 100watt 12Vdc solar panels and wants to hook them up to supply a battery rack which will supply an inverter to a small load centre for a couple receptacles. He wants to mount the roof junction box to his chimney stack and send conduit down the chimney to supply the...

I'm considering installing a DIY solar. My current breaker service panel is 100amps. I can't see the service wires, they are underground and behind the locked meter. I assume they were sized correctly for 100amps. My biggest draw is AC which is protected with 40 amp fuses. The 100 amp breaker...

I have received an RFI from my EC asking about beaker installation as it is not possible to install the backfeed breaker at the opposite end of the main breaker. This is a 2000amp service with a 2000amp main. The top spare breaker (400amp) is the point of interconnection, but the EC says it...

Fellow sparkies, I'm installing a 6.5kW Photovoltaic system and homeowner will have a generator installed in the near future. His intention is to have whole house back up when grid is down. However, this has not been engineered. I'm concerned that PV + generator will be too much production if...

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Hi guys, I was wondering what the average price is for electrical sub contractors given that you only do the electrical part of the job not installing solar panels. i know the average in TX for total in sales is $2.80 per wattage that includes everything install electrical sales commissions...

I am looking for some help on wiring an automatic transfer switch. I will be hiring a professional but want to understand how the wiring would work. I have put up two pictures of a 240v and 120v option. Solar and a battery will be the primary source of power the the critical load sub panel with...

I understand a Grid Tie PV inverter converts DC to AC and that can be fed into the grid, with a safety feature which disconnects it when the grid goes down to protect line workers. Does a device like this exist that can be plugged into a portable generator, that is already generating AC, which...

Hello people! First of all, I am not an electrician. Having learned what (relative) little I know about electricity to apply it to a do it yourself off-grid solar system, I have HUGE RESPECT FOR YOU PEOPLE. Lord have mercy, this stuff is confusing!!! LOL. Anyway, I have a question if I...

I'm trying to determine real-world requirements for rapid shutdown in small "cottage" off-grid systems in Manitoba, Canada. If you're off-grid, code compliance falls to the Office of the Fire Commissioner. As far as I can tell, there is currently (no pun intended, but I'll pretend it was) only...

Can anyone confirm that this regulation for Solar PV - Overcurrent Protection is in the 2009 Canadian Electrical Code book: "Where overcurrent protection is required by Subrule (1) for a photovoltaic source circuit, each photovoltaic source circuit shall be protected by an individual...

Hey guys, I'm new here in the forum, and my NEM electricity bill skyrocketed. So I bought Sense to see why am i using so much electricity. I have solar panels, and "Sense" device has to be installed inside the main panel. The trouble is that there is no space for "sense" in the main panel, and...

Has anyone out there had experience with solar modules from REC having marks on them that look like a grease mark but turn out to actually be under the glass due to a manufacturer defect? The solar company that I work for in New England has seen a few dozen of these. Some have installed them for...

I'm swapping out a 100 amp panel that was damaged for another 100 amp panel. Adding spaces w/ my new panel. The previous panel had the solar hot tapped in btwn. The 100 amp & the service head, instead of being put on a breaker. Now that i have extra spaces for a breaker, do you think i should...

I work for a commercial electrical contractor and we don't do much with solar. We were brought into a building to disconnect some panels so roofers could get in and the guy who reconnected them ****ed up. He didn't disconnect the DC link and said he saw an arc at the MC4 connector when he did...

Greetings, I'm working on job in MD. I got a design kicked back because I had TC-ER cable running from an outside AC PV combiner into an attic, through the attic, down a piece of EMT (set aside for PV when the house was built), and into a disconnect in the homeowner's mechanical room. The...

The chairmen of my neighborhood had asked me to look at a solar system to find out why the sign light is barely working on days where there is not as much sun. I have not worked on solar systems like this before. It is quite high tech. The package comes with the solar panel, Controller box...

It is permissible to terminate two different inverter outputs, each with its own fused disconnect, ahead of the service disconnect? NEC 2014 in effect.